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Finding the Fourth Proportional to 267,715.62, 401,586.74 and 87,819.18

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Solution

The fourth proportional to 267,715.62, 401,586.74 and 87,819.18 is: 131,733.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,715.62 : 401,586.74 = 87,819.18 : x
  2. Step 2: Convert to fraction form
    267,715.62/401,586.74 = 87,819.18/x
  3. Step 3: Cross multiply
    267,715.62x = 401,586.74 × 87,819.18
  4. Step 4: Simplify right side
    267,715.62x = 35,267,018,205.67
  5. Step 5: Solve for x
    x = 35,267,018,205.67/267,715.62
  6. Step 6: Final answer
    x = 131,733.14

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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.