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Finding the Fourth Proportional to 66,862.49, 100,226.18 and 41,920.04

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Solution

The fourth proportional to 66,862.49, 100,226.18 and 41,920.04 is: 62,837.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,862.49 : 100,226.18 = 41,920.04 : x
  2. Step 2: Convert to fraction form
    66,862.49/100,226.18 = 41,920.04/x
  3. Step 3: Cross multiply
    66,862.49x = 100,226.18 × 41,920.04
  4. Step 4: Simplify right side
    66,862.49x = 4,201,484,763.92
  5. Step 5: Solve for x
    x = 4,201,484,763.92/66,862.49
  6. Step 6: Final answer
    x = 62,837.70

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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.