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Finding the Fourth Proportional to 61,216.88, 84,458.03 and 38,557.76

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Solution

The fourth proportional to 61,216.88, 84,458.03 and 38,557.76 is: 53,196.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,216.88 : 84,458.03 = 38,557.76 : x
  2. Step 2: Convert to fraction form
    61,216.88/84,458.03 = 38,557.76/x
  3. Step 3: Cross multiply
    61,216.88x = 84,458.03 × 38,557.76
  4. Step 4: Simplify right side
    61,216.88x = 3,256,511,835.73
  5. Step 5: Solve for x
    x = 3,256,511,835.73/61,216.88
  6. Step 6: Final answer
    x = 53,196.31

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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.