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Finding the Fourth Proportional to 40,881.05, 61,311.05 and 14,581.97

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Solution

The fourth proportional to 40,881.05, 61,311.05 and 14,581.97 is: 21,869.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,881.05 : 61,311.05 = 14,581.97 : x
  2. Step 2: Convert to fraction form
    40,881.05/61,311.05 = 14,581.97/x
  3. Step 3: Cross multiply
    40,881.05x = 61,311.05 × 14,581.97
  4. Step 4: Simplify right side
    40,881.05x = 894,035,818.86
  5. Step 5: Solve for x
    x = 894,035,818.86/40,881.05
  6. Step 6: Final answer
    x = 21,869.20

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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.