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Finding the Fourth Proportional to 719,062.36, 992,304.90 and 396,772.20

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Solution

The fourth proportional to 719,062.36, 992,304.90 and 396,772.20 is: 547,545.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,062.36 : 992,304.90 = 396,772.20 : x
  2. Step 2: Convert to fraction form
    719,062.36/992,304.90 = 396,772.20/x
  3. Step 3: Cross multiply
    719,062.36x = 992,304.90 × 396,772.20
  4. Step 4: Simplify right side
    719,062.36x = 393,718,998,243.78
  5. Step 5: Solve for x
    x = 393,718,998,243.78/719,062.36
  6. Step 6: Final answer
    x = 547,545.00

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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.