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Finding the Fourth Proportional to 61,691.40, 85,134.60 and 33,397.56

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Solution

The fourth proportional to 61,691.40, 85,134.60 and 33,397.56 is: 46,088.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,691.40 : 85,134.60 = 33,397.56 : x
  2. Step 2: Convert to fraction form
    61,691.40/85,134.60 = 33,397.56/x
  3. Step 3: Cross multiply
    61,691.40x = 85,134.60 × 33,397.56
  4. Step 4: Simplify right side
    61,691.40x = 2,843,287,911.58
  5. Step 5: Solve for x
    x = 2,843,287,911.58/61,691.40
  6. Step 6: Final answer
    x = 46,088.89

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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.