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Finding the Fourth Proportional to 40,662.65, 60,947.16 and 15,691.65

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Solution

The fourth proportional to 40,662.65, 60,947.16 and 15,691.65 is: 23,519.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,662.65 : 60,947.16 = 15,691.65 : x
  2. Step 2: Convert to fraction form
    40,662.65/60,947.16 = 15,691.65/x
  3. Step 3: Cross multiply
    40,662.65x = 60,947.16 × 15,691.65
  4. Step 4: Simplify right side
    40,662.65x = 956,361,503.21
  5. Step 5: Solve for x
    x = 956,361,503.21/40,662.65
  6. Step 6: Final answer
    x = 23,519.41

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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.