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Finding the Fourth Proportional to 124,692.75, 172,076.91 and 68,104.13

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Solution

The fourth proportional to 124,692.75, 172,076.91 and 68,104.13 is: 93,984.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,692.75 : 172,076.91 = 68,104.13 : x
  2. Step 2: Convert to fraction form
    124,692.75/172,076.91 = 68,104.13/x
  3. Step 3: Cross multiply
    124,692.75x = 172,076.91 × 68,104.13
  4. Step 4: Simplify right side
    124,692.75x = 11,719,147,132.86
  5. Step 5: Solve for x
    x = 11,719,147,132.86/124,692.75
  6. Step 6: Final answer
    x = 93,984.19

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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.