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Finding the Fourth Proportional to 57,063.72, 78,750.28 and 31,569.66

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Solution

The fourth proportional to 57,063.72, 78,750.28 and 31,569.66 is: 43,567.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,063.72 : 78,750.28 = 31,569.66 : x
  2. Step 2: Convert to fraction form
    57,063.72/78,750.28 = 31,569.66/x
  3. Step 3: Cross multiply
    57,063.72x = 78,750.28 × 31,569.66
  4. Step 4: Simplify right side
    57,063.72x = 2,486,119,564.50
  5. Step 5: Solve for x
    x = 2,486,119,564.50/57,063.72
  6. Step 6: Final answer
    x = 43,567.43

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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.