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Finding the Fourth Proportional to 61,691.70, 85,134.44 and 33,397.38

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Solution

The fourth proportional to 61,691.70, 85,134.44 and 33,397.38 is: 46,088.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,691.70 : 85,134.44 = 33,397.38 : x
  2. Step 2: Convert to fraction form
    61,691.70/85,134.44 = 33,397.38/x
  3. Step 3: Cross multiply
    61,691.70x = 85,134.44 × 33,397.38
  4. Step 4: Simplify right side
    61,691.70x = 2,843,267,243.77
  5. Step 5: Solve for x
    x = 2,843,267,243.77/61,691.70
  6. Step 6: Final answer
    x = 46,088.33

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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.