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Finding the Fourth Proportional to 642,605.76, 886,900.32 and 614,257.92

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Solution

The fourth proportional to 642,605.76, 886,900.32 and 614,257.92 is: 847,775.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,605.76 : 886,900.32 = 614,257.92 : x
  2. Step 2: Convert to fraction form
    642,605.76/886,900.32 = 614,257.92/x
  3. Step 3: Cross multiply
    642,605.76x = 886,900.32 × 614,257.92
  4. Step 4: Simplify right side
    642,605.76x = 544,785,545,810.53
  5. Step 5: Solve for x
    x = 544,785,545,810.53/642,605.76
  6. Step 6: Final answer
    x = 847,775.70

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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.