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Finding the Fourth Proportional to 636,400.31, 954,600.10 and 187,124.90

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Solution

The fourth proportional to 636,400.31, 954,600.10 and 187,124.90 is: 280,687.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,400.31 : 954,600.10 = 187,124.90 : x
  2. Step 2: Convert to fraction form
    636,400.31/954,600.10 = 187,124.90/x
  3. Step 3: Cross multiply
    636,400.31x = 954,600.10 × 187,124.90
  4. Step 4: Simplify right side
    636,400.31x = 178,629,448,252.49
  5. Step 5: Solve for x
    x = 178,629,448,252.49/636,400.31
  6. Step 6: Final answer
    x = 280,687.24

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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.