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Finding the Fourth Proportional to 66,915.16, 100,355.94 and 27,483.16

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Solution

The fourth proportional to 66,915.16, 100,355.94 and 27,483.16 is: 41,217.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,915.16 : 100,355.94 = 27,483.16 : x
  2. Step 2: Convert to fraction form
    66,915.16/100,355.94 = 27,483.16/x
  3. Step 3: Cross multiply
    66,915.16x = 100,355.94 × 27,483.16
  4. Step 4: Simplify right side
    66,915.16x = 2,758,098,355.97
  5. Step 5: Solve for x
    x = 2,758,098,355.97/66,915.16
  6. Step 6: Final answer
    x = 41,217.84

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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.