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Finding the Fourth Proportional to 7,431,063.30, 10,390,891.50 and 7,431,063.30

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Solution

The fourth proportional to 7,431,063.30, 10,390,891.50 and 7,431,063.30 is: 10,390,891.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,431,063.30 : 10,390,891.50 = 7,431,063.30 : x
  2. Step 2: Convert to fraction form
    7,431,063.30/10,390,891.50 = 7,431,063.30/x
  3. Step 3: Cross multiply
    7,431,063.30x = 10,390,891.50 × 7,431,063.30
  4. Step 4: Simplify right side
    7,431,063.30x = 77,215,372,479,931.95
  5. Step 5: Solve for x
    x = 77,215,372,479,931.95/7,431,063.30
  6. Step 6: Final answer
    x = 10,390,891.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.