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Finding the Fourth Proportional to 40,889.70, 61,302.15 and 22,421.70

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Solution

The fourth proportional to 40,889.70, 61,302.15 and 22,421.70 is: 33,614.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,889.70 : 61,302.15 = 22,421.70 : x
  2. Step 2: Convert to fraction form
    40,889.70/61,302.15 = 22,421.70/x
  3. Step 3: Cross multiply
    40,889.70x = 61,302.15 × 22,421.70
  4. Step 4: Simplify right side
    40,889.70x = 1,374,498,416.66
  5. Step 5: Solve for x
    x = 1,374,498,416.66/40,889.70
  6. Step 6: Final answer
    x = 33,614.78

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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.