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Finding the Fourth Proportional to 125,080.55, 172,611.23 and 68,491.92

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Solution

The fourth proportional to 125,080.55, 172,611.23 and 68,491.92 is: 94,518.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,080.55 : 172,611.23 = 68,491.92 : x
  2. Step 2: Convert to fraction form
    125,080.55/172,611.23 = 68,491.92/x
  3. Step 3: Cross multiply
    125,080.55x = 172,611.23 × 68,491.92
  4. Step 4: Simplify right side
    125,080.55x = 11,822,474,213.80
  5. Step 5: Solve for x
    x = 11,822,474,213.80/125,080.55
  6. Step 6: Final answer
    x = 94,518.89

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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.