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Finding the Fourth Proportional to 61,765.73, 85,172.60 and 52,842.77

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Solution

The fourth proportional to 61,765.73, 85,172.60 and 52,842.77 is: 72,868.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,765.73 : 85,172.60 = 52,842.77 : x
  2. Step 2: Convert to fraction form
    61,765.73/85,172.60 = 52,842.77/x
  3. Step 3: Cross multiply
    61,765.73x = 85,172.60 × 52,842.77
  4. Step 4: Simplify right side
    61,765.73x = 4,500,755,422.03
  5. Step 5: Solve for x
    x = 4,500,755,422.03/61,765.73
  6. Step 6: Final answer
    x = 72,868.17

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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.