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Finding the Fourth Proportional to 542,191.72, 813,248.70 and 275,785.96

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Solution

The fourth proportional to 542,191.72, 813,248.70 and 275,785.96 is: 413,659.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,191.72 : 813,248.70 = 275,785.96 : x
  2. Step 2: Convert to fraction form
    542,191.72/813,248.70 = 275,785.96/x
  3. Step 3: Cross multiply
    542,191.72x = 813,248.70 × 275,785.96
  4. Step 4: Simplify right side
    542,191.72x = 224,282,573,448.25
  5. Step 5: Solve for x
    x = 224,282,573,448.25/542,191.72
  6. Step 6: Final answer
    x = 413,659.16

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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.