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Finding the Fourth Proportional to 66,452.52, 99,641.98 and 45,416.31

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Solution

The fourth proportional to 66,452.52, 99,641.98 and 45,416.31 is: 68,099.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,452.52 : 99,641.98 = 45,416.31 : x
  2. Step 2: Convert to fraction form
    66,452.52/99,641.98 = 45,416.31/x
  3. Step 3: Cross multiply
    66,452.52x = 99,641.98 × 45,416.31
  4. Step 4: Simplify right side
    66,452.52x = 4,525,371,052.69
  5. Step 5: Solve for x
    x = 4,525,371,052.69/66,452.52
  6. Step 6: Final answer
    x = 68,099.31

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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.