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Finding the Fourth Proportional to 41,159.68, 61,731.20 and 11,578.88

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Solution

The fourth proportional to 41,159.68, 61,731.20 and 11,578.88 is: 17,365.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,159.68 : 61,731.20 = 11,578.88 : x
  2. Step 2: Convert to fraction form
    41,159.68/61,731.20 = 11,578.88/x
  3. Step 3: Cross multiply
    41,159.68x = 61,731.20 × 11,578.88
  4. Step 4: Simplify right side
    41,159.68x = 714,778,157.06
  5. Step 5: Solve for x
    x = 714,778,157.06/41,159.68
  6. Step 6: Final answer
    x = 17,365.98

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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.