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Finding the Fourth Proportional to 90,915.92, 136,386.68 and 44,162.64

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Solution

The fourth proportional to 90,915.92, 136,386.68 and 44,162.64 is: 66,250.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,915.92 : 136,386.68 = 44,162.64 : x
  2. Step 2: Convert to fraction form
    90,915.92/136,386.68 = 44,162.64/x
  3. Step 3: Cross multiply
    90,915.92x = 136,386.68 × 44,162.64
  4. Step 4: Simplify right side
    90,915.92x = 6,023,195,849.64
  5. Step 5: Solve for x
    x = 6,023,195,849.64/90,915.92
  6. Step 6: Final answer
    x = 66,250.18

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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.