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Finding the Fourth Proportional to 66,412.76, 99,625.05 and 22,039.90

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Solution

The fourth proportional to 66,412.76, 99,625.05 and 22,039.90 is: 33,061.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,412.76 : 99,625.05 = 22,039.90 : x
  2. Step 2: Convert to fraction form
    66,412.76/99,625.05 = 22,039.90/x
  3. Step 3: Cross multiply
    66,412.76x = 99,625.05 × 22,039.90
  4. Step 4: Simplify right side
    66,412.76x = 2,195,725,890.43
  5. Step 5: Solve for x
    x = 2,195,725,890.43/66,412.76
  6. Step 6: Final answer
    x = 33,061.81

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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.