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Finding the Fourth Proportional to 698,761.98, 964,171.15 and 392,795.96

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Solution

The fourth proportional to 698,761.98, 964,171.15 and 392,795.96 is: 541,990.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,761.98 : 964,171.15 = 392,795.96 : x
  2. Step 2: Convert to fraction form
    698,761.98/964,171.15 = 392,795.96/x
  3. Step 3: Cross multiply
    698,761.98x = 964,171.15 × 392,795.96
  4. Step 4: Simplify right side
    698,761.98x = 378,722,526,665.71
  5. Step 5: Solve for x
    x = 378,722,526,665.71/698,761.98
  6. Step 6: Final answer
    x = 541,990.75

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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.