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Finding the Fourth Proportional to 29,856.60, 44,774.10 and 12,079.80

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Solution

The fourth proportional to 29,856.60, 44,774.10 and 12,079.80 is: 18,115.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,856.60 : 44,774.10 = 12,079.80 : x
  2. Step 2: Convert to fraction form
    29,856.60/44,774.10 = 12,079.80/x
  3. Step 3: Cross multiply
    29,856.60x = 44,774.10 × 12,079.80
  4. Step 4: Simplify right side
    29,856.60x = 540,862,173.18
  5. Step 5: Solve for x
    x = 540,862,173.18/29,856.60
  6. Step 6: Final answer
    x = 18,115.33

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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.