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Finding the Fourth Proportional to 29,139.75, 43,712.87 and 10,671.75

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Solution

The fourth proportional to 29,139.75, 43,712.87 and 10,671.75 is: 16,008.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,139.75 : 43,712.87 = 10,671.75 : x
  2. Step 2: Convert to fraction form
    29,139.75/43,712.87 = 10,671.75/x
  3. Step 3: Cross multiply
    29,139.75x = 43,712.87 × 10,671.75
  4. Step 4: Simplify right side
    29,139.75x = 466,492,767.06
  5. Step 5: Solve for x
    x = 466,492,767.06/29,139.75
  6. Step 6: Final answer
    x = 16,008.81

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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.