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Finding the Fourth Proportional to 392,454.96, 541,580.94 and 220,374.30

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Solution

The fourth proportional to 392,454.96, 541,580.94 and 220,374.30 is: 304,112.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,454.96 : 541,580.94 = 220,374.30 : x
  2. Step 2: Convert to fraction form
    392,454.96/541,580.94 = 220,374.30/x
  3. Step 3: Cross multiply
    392,454.96x = 541,580.94 × 220,374.30
  4. Step 4: Simplify right side
    392,454.96x = 119,350,520,545.84
  5. Step 5: Solve for x
    x = 119,350,520,545.84/392,454.96
  6. Step 6: Final answer
    x = 304,112.66

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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.