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Finding the Fourth Proportional to 61,640.13, 92,014.17 and 54,166.68

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Solution

The fourth proportional to 61,640.13, 92,014.17 and 54,166.68 is: 80,858.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,640.13 : 92,014.17 = 54,166.68 : x
  2. Step 2: Convert to fraction form
    61,640.13/92,014.17 = 54,166.68/x
  3. Step 3: Cross multiply
    61,640.13x = 92,014.17 × 54,166.68
  4. Step 4: Simplify right side
    61,640.13x = 4,984,102,101.86
  5. Step 5: Solve for x
    x = 4,984,102,101.86/61,640.13
  6. Step 6: Final answer
    x = 80,858.07

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.