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Finding the Fourth Proportional to 708,358.38, 977,506.05 and 386,061.54

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Solution

The fourth proportional to 708,358.38, 977,506.05 and 386,061.54 is: 532,749.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,358.38 : 977,506.05 = 386,061.54 : x
  2. Step 2: Convert to fraction form
    708,358.38/977,506.05 = 386,061.54/x
  3. Step 3: Cross multiply
    708,358.38x = 977,506.05 × 386,061.54
  4. Step 4: Simplify right side
    708,358.38x = 377,377,491,022.32
  5. Step 5: Solve for x
    x = 377,377,491,022.32/708,358.38
  6. Step 6: Final answer
    x = 532,749.38

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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.