Home / 13,169,607,436.78-18,173,571,611.68-7,147,983,554.75

Finding the Fourth Proportional to 13,169,607,436.78, 18,173,571,611.68 and 7,147,983,554.75

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Solution

The fourth proportional to 13,169,607,436.78, 18,173,571,611.68 and 7,147,983,554.75 is: 9,863,953,169.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,169,607,436.78 : 18,173,571,611.68 = 7,147,983,554.75 : x
  2. Step 2: Convert to fraction form
    13,169,607,436.78/18,173,571,611.68 = 7,147,983,554.75/x
  3. Step 3: Cross multiply
    13,169,607,436.78x = 18,173,571,611.68 × 7,147,983,554.75
  4. Step 4: Simplify right side
    13,169,607,436.78x = 129,904,391,011,376,922,624
  5. Step 5: Solve for x
    x = 129,904,391,011,376,922,624/13,169,607,436.78
  6. Step 6: Final answer
    x = 9,863,953,169.06

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Double scale
Find fourth proportional to 13,169,607,437.78, 18,173,571,613.06 and 7,147,983,555.75
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.