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Finding the Fourth Proportional to 638,381.28, 957,800.52 and 273,489.78

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Solution

The fourth proportional to 638,381.28, 957,800.52 and 273,489.78 is: 410,332.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,381.28 : 957,800.52 = 273,489.78 : x
  2. Step 2: Convert to fraction form
    638,381.28/957,800.52 = 273,489.78/x
  3. Step 3: Cross multiply
    638,381.28x = 957,800.52 × 273,489.78
  4. Step 4: Simplify right side
    638,381.28x = 261,948,653,498.69
  5. Step 5: Solve for x
    x = 261,948,653,498.69/638,381.28
  6. Step 6: Final answer
    x = 410,332.60

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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.