Home / 13,658,154,366.25-18,842,481,499.62-9,143,487,976.96

Finding the Fourth Proportional to 13,658,154,366.25, 18,842,481,499.62 and 9,143,487,976.96

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Solution

The fourth proportional to 13,658,154,366.25, 18,842,481,499.62 and 9,143,487,976.96 is: 12,614,149,644.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,658,154,366.25 : 18,842,481,499.62 = 9,143,487,976.96 : x
  2. Step 2: Convert to fraction form
    13,658,154,366.25/18,842,481,499.62 = 9,143,487,976.96/x
  3. Step 3: Cross multiply
    13,658,154,366.25x = 18,842,481,499.62 × 9,143,487,976.96
  4. Step 4: Simplify right side
    13,658,154,366.25x = 172,286,003,047,866,662,912
  5. Step 5: Solve for x
    x = 172,286,003,047,866,662,912/13,658,154,366.25
  6. Step 6: Final answer
    x = 12,614,149,644.82

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Double scale
Find fourth proportional to 13,658,154,367.25, 18,842,481,501 and 9,143,487,977.96
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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.