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Finding the Fourth Proportional to 57,575.81, 86,351.81 and 15,445.91

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Solution

The fourth proportional to 57,575.81, 86,351.81 and 15,445.91 is: 23,165.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,575.81 : 86,351.81 = 15,445.91 : x
  2. Step 2: Convert to fraction form
    57,575.81/86,351.81 = 15,445.91/x
  3. Step 3: Cross multiply
    57,575.81x = 86,351.81 × 15,445.91
  4. Step 4: Simplify right side
    57,575.81x = 1,333,781,938.52
  5. Step 5: Solve for x
    x = 1,333,781,938.52/57,575.81
  6. Step 6: Final answer
    x = 23,165.66

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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.