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Finding the Fourth Proportional to 84,492.89, 126,863.87 and 47,125.97

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Solution

The fourth proportional to 84,492.89, 126,863.87 and 47,125.97 is: 70,758.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,492.89 : 126,863.87 = 47,125.97 : x
  2. Step 2: Convert to fraction form
    84,492.89/126,863.87 = 47,125.97/x
  3. Step 3: Cross multiply
    84,492.89x = 126,863.87 × 47,125.97
  4. Step 4: Simplify right side
    84,492.89x = 5,978,582,061.75
  5. Step 5: Solve for x
    x = 5,978,582,061.75/84,492.89
  6. Step 6: Final answer
    x = 70,758.41

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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.