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Finding the Fourth Proportional to 732,665.40, 1,098,998.10 and 681,343.80

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Solution

The fourth proportional to 732,665.40, 1,098,998.10 and 681,343.80 is: 1,022,015.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    732,665.40 : 1,098,998.10 = 681,343.80 : x
  2. Step 2: Convert to fraction form
    732,665.40/1,098,998.10 = 681,343.80/x
  3. Step 3: Cross multiply
    732,665.40x = 1,098,998.10 × 681,343.80
  4. Step 4: Simplify right side
    732,665.40x = 748,795,541,646.78
  5. Step 5: Solve for x
    x = 748,795,541,646.78/732,665.40
  6. Step 6: Final answer
    x = 1,022,015.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.