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Finding the Fourth Proportional to 86,917.52, 130,375.20 and 27,752.42

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Solution

The fourth proportional to 86,917.52, 130,375.20 and 27,752.42 is: 41,628.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,917.52 : 130,375.20 = 27,752.42 : x
  2. Step 2: Convert to fraction form
    86,917.52/130,375.20 = 27,752.42/x
  3. Step 3: Cross multiply
    86,917.52x = 130,375.20 × 27,752.42
  4. Step 4: Simplify right side
    86,917.52x = 3,618,227,307.98
  5. Step 5: Solve for x
    x = 3,618,227,307.98/86,917.52
  6. Step 6: Final answer
    x = 41,628.29

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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.