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Finding the Fourth Proportional to 88,915.10, 133,469.85 and 55,672.70

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Solution

The fourth proportional to 88,915.10, 133,469.85 and 55,672.70 is: 83,569.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,915.10 : 133,469.85 = 55,672.70 : x
  2. Step 2: Convert to fraction form
    88,915.10/133,469.85 = 55,672.70/x
  3. Step 3: Cross multiply
    88,915.10x = 133,469.85 × 55,672.70
  4. Step 4: Simplify right side
    88,915.10x = 7,430,626,918.10
  5. Step 5: Solve for x
    x = 7,430,626,918.10/88,915.10
  6. Step 6: Final answer
    x = 83,569.91

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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.