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Finding the Fourth Proportional to 86,565.53, 129,835.26 and 27,393.50

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Solution

The fourth proportional to 86,565.53, 129,835.26 and 27,393.50 is: 41,086.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,565.53 : 129,835.26 = 27,393.50 : x
  2. Step 2: Convert to fraction form
    86,565.53/129,835.26 = 27,393.50/x
  3. Step 3: Cross multiply
    86,565.53x = 129,835.26 × 27,393.50
  4. Step 4: Simplify right side
    86,565.53x = 3,556,641,545.63
  5. Step 5: Solve for x
    x = 3,556,641,545.63/86,565.53
  6. Step 6: Final answer
    x = 41,086.12

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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.