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Finding the Fourth Proportional to 121,940.64, 182,758.48 and 58,748.90

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Solution

The fourth proportional to 121,940.64, 182,758.48 and 58,748.90 is: 88,049.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,940.64 : 182,758.48 = 58,748.90 : x
  2. Step 2: Convert to fraction form
    121,940.64/182,758.48 = 58,748.90/x
  3. Step 3: Cross multiply
    121,940.64x = 182,758.48 × 58,748.90
  4. Step 4: Simplify right side
    121,940.64x = 10,736,858,605.01
  5. Step 5: Solve for x
    x = 10,736,858,605.01/121,940.64
  6. Step 6: Final answer
    x = 88,049.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.