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Finding the Fourth Proportional to 61,371.78, 84,691.72 and 35,531.41

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Solution

The fourth proportional to 61,371.78, 84,691.72 and 35,531.41 is: 49,032.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,371.78 : 84,691.72 = 35,531.41 : x
  2. Step 2: Convert to fraction form
    61,371.78/84,691.72 = 35,531.41/x
  3. Step 3: Cross multiply
    61,371.78x = 84,691.72 × 35,531.41
  4. Step 4: Simplify right side
    61,371.78x = 3,009,216,356.67
  5. Step 5: Solve for x
    x = 3,009,216,356.67/61,371.78
  6. Step 6: Final answer
    x = 49,032.58

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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.