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Finding the Fourth Proportional to 112,751.64, 155,592.17 and 67,454.61

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Solution

The fourth proportional to 112,751.64, 155,592.17 and 67,454.61 is: 93,084.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,751.64 : 155,592.17 = 67,454.61 : x
  2. Step 2: Convert to fraction form
    112,751.64/155,592.17 = 67,454.61/x
  3. Step 3: Cross multiply
    112,751.64x = 155,592.17 × 67,454.61
  4. Step 4: Simplify right side
    112,751.64x = 10,495,408,809.13
  5. Step 5: Solve for x
    x = 10,495,408,809.13/112,751.64
  6. Step 6: Final answer
    x = 93,084.31

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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.