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Finding the Fourth Proportional to 66,025.35, 98,863.07 and 39,693.87

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Solution

The fourth proportional to 66,025.35, 98,863.07 and 39,693.87 is: 59,435.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,025.35 : 98,863.07 = 39,693.87 : x
  2. Step 2: Convert to fraction form
    66,025.35/98,863.07 = 39,693.87/x
  3. Step 3: Cross multiply
    66,025.35x = 98,863.07 × 39,693.87
  4. Step 4: Simplify right side
    66,025.35x = 3,924,257,649.91
  5. Step 5: Solve for x
    x = 3,924,257,649.91/66,025.35
  6. Step 6: Final answer
    x = 59,435.62

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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.