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Finding the Fourth Proportional to 124,793.13, 172,214.50 and 68,204.50

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Solution

The fourth proportional to 124,793.13, 172,214.50 and 68,204.50 is: 94,122.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,793.13 : 172,214.50 = 68,204.50 : x
  2. Step 2: Convert to fraction form
    124,793.13/172,214.50 = 68,204.50/x
  3. Step 3: Cross multiply
    124,793.13x = 172,214.50 × 68,204.50
  4. Step 4: Simplify right side
    124,793.13x = 11,745,803,865.25
  5. Step 5: Solve for x
    x = 11,745,803,865.25/124,793.13
  6. Step 6: Final answer
    x = 94,122.20

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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.