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Finding the Fourth Proportional to 57,545.82, 79,407.54 and 42,446.61

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Solution

The fourth proportional to 57,545.82, 79,407.54 and 42,446.61 is: 58,572.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,545.82 : 79,407.54 = 42,446.61 : x
  2. Step 2: Convert to fraction form
    57,545.82/79,407.54 = 42,446.61/x
  3. Step 3: Cross multiply
    57,545.82x = 79,407.54 × 42,446.61
  4. Step 4: Simplify right side
    57,545.82x = 3,370,580,881.44
  5. Step 5: Solve for x
    x = 3,370,580,881.44/57,545.82
  6. Step 6: Final answer
    x = 58,572.12

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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.