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Finding the Fourth Proportional to 86,562.52, 129,830.76 and 27,390.49

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Solution

The fourth proportional to 86,562.52, 129,830.76 and 27,390.49 is: 41,081.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,562.52 : 129,830.76 = 27,390.49 : x
  2. Step 2: Convert to fraction form
    86,562.52/129,830.76 = 27,390.49/x
  3. Step 3: Cross multiply
    86,562.52x = 129,830.76 × 27,390.49
  4. Step 4: Simplify right side
    86,562.52x = 3,556,127,808.90
  5. Step 5: Solve for x
    x = 3,556,127,808.90/86,562.52
  6. Step 6: Final answer
    x = 41,081.61

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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.