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Finding the Fourth Proportional to 708,456.36, 977,640.36 and 386,159.38

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Solution

The fourth proportional to 708,456.36, 977,640.36 and 386,159.38 is: 532,883.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,456.36 : 977,640.36 = 386,159.38 : x
  2. Step 2: Convert to fraction form
    708,456.36/977,640.36 = 386,159.38/x
  3. Step 3: Cross multiply
    708,456.36x = 977,640.36 × 386,159.38
  4. Step 4: Simplify right side
    708,456.36x = 377,524,995,280.58
  5. Step 5: Solve for x
    x = 377,524,995,280.58/708,456.36
  6. Step 6: Final answer
    x = 532,883.91

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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.