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Finding the Fourth Proportional to 61,691.28, 85,134.54 and 33,397.56

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Solution

The fourth proportional to 61,691.28, 85,134.54 and 33,397.56 is: 46,088.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,691.28 : 85,134.54 = 33,397.56 : x
  2. Step 2: Convert to fraction form
    61,691.28/85,134.54 = 33,397.56/x
  3. Step 3: Cross multiply
    61,691.28x = 85,134.54 × 33,397.56
  4. Step 4: Simplify right side
    61,691.28x = 2,843,285,907.72
  5. Step 5: Solve for x
    x = 2,843,285,907.72/61,691.28
  6. Step 6: Final answer
    x = 46,088.94

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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.