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Finding the Fourth Proportional to 124,951.64, 172,432.59 and 68,362.88

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Solution

The fourth proportional to 124,951.64, 172,432.59 and 68,362.88 is: 94,340.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,951.64 : 172,432.59 = 68,362.88 : x
  2. Step 2: Convert to fraction form
    124,951.64/172,432.59 = 68,362.88/x
  3. Step 3: Cross multiply
    124,951.64x = 172,432.59 × 68,362.88
  4. Step 4: Simplify right side
    124,951.64x = 11,787,988,458.26
  5. Step 5: Solve for x
    x = 11,787,988,458.26/124,951.64
  6. Step 6: Final answer
    x = 94,340.41

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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.