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Finding the Fourth Proportional to 86,566.92, 129,866.40 and 27,417.48

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Solution

The fourth proportional to 86,566.92, 129,866.40 and 27,417.48 is: 41,131.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,566.92 : 129,866.40 = 27,417.48 : x
  2. Step 2: Convert to fraction form
    86,566.92/129,866.40 = 27,417.48/x
  3. Step 3: Cross multiply
    86,566.92x = 129,866.40 × 27,417.48
  4. Step 4: Simplify right side
    86,566.92x = 3,560,609,424.67
  5. Step 5: Solve for x
    x = 3,560,609,424.67/86,566.92
  6. Step 6: Final answer
    x = 41,131.29

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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.