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Finding the Fourth Proportional to 66,371.92, 99,323.90 and 41,423.66

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Solution

The fourth proportional to 66,371.92, 99,323.90 and 41,423.66 is: 61,989.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,371.92 : 99,323.90 = 41,423.66 : x
  2. Step 2: Convert to fraction form
    66,371.92/99,323.90 = 41,423.66/x
  3. Step 3: Cross multiply
    66,371.92x = 99,323.90 × 41,423.66
  4. Step 4: Simplify right side
    66,371.92x = 4,114,359,463.47
  5. Step 5: Solve for x
    x = 4,114,359,463.47/66,371.92
  6. Step 6: Final answer
    x = 61,989.46

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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.