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Finding the Fourth Proportional to 41,969.76, 62,969.20 and 18,612.60

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Solution

The fourth proportional to 41,969.76, 62,969.20 and 18,612.60 is: 27,925.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,969.76 : 62,969.20 = 18,612.60 : x
  2. Step 2: Convert to fraction form
    41,969.76/62,969.20 = 18,612.60/x
  3. Step 3: Cross multiply
    41,969.76x = 62,969.20 × 18,612.60
  4. Step 4: Simplify right side
    41,969.76x = 1,172,020,531.92
  5. Step 5: Solve for x
    x = 1,172,020,531.92/41,969.76
  6. Step 6: Final answer
    x = 27,925.36

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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.