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Finding the Fourth Proportional to 90,882.82, 136,307.78 and 27,687.82

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Solution

The fourth proportional to 90,882.82, 136,307.78 and 27,687.82 is: 41,526.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,882.82 : 136,307.78 = 27,687.82 : x
  2. Step 2: Convert to fraction form
    90,882.82/136,307.78 = 27,687.82/x
  3. Step 3: Cross multiply
    90,882.82x = 136,307.78 × 27,687.82
  4. Step 4: Simplify right side
    90,882.82x = 3,774,065,277.24
  5. Step 5: Solve for x
    x = 3,774,065,277.24/90,882.82
  6. Step 6: Final answer
    x = 41,526.72

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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.