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Finding the Fourth Proportional to 124,793.88, 172,215.70 and 68,205.32

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Solution

The fourth proportional to 124,793.88, 172,215.70 and 68,205.32 is: 94,123.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,793.88 : 172,215.70 = 68,205.32 : x
  2. Step 2: Convert to fraction form
    124,793.88/172,215.70 = 68,205.32/x
  3. Step 3: Cross multiply
    124,793.88x = 172,215.70 × 68,205.32
  4. Step 4: Simplify right side
    124,793.88x = 11,746,026,927.52
  5. Step 5: Solve for x
    x = 11,746,026,927.52/124,793.88
  6. Step 6: Final answer
    x = 94,123.42

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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.