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Finding the Fourth Proportional to 86,581.98, 129,859.98 and 27,409.98

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Solution

The fourth proportional to 86,581.98, 129,859.98 and 27,409.98 is: 41,110.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,581.98 : 129,859.98 = 27,409.98 : x
  2. Step 2: Convert to fraction form
    86,581.98/129,859.98 = 27,409.98/x
  3. Step 3: Cross multiply
    86,581.98x = 129,859.98 × 27,409.98
  4. Step 4: Simplify right side
    86,581.98x = 3,559,459,454.60
  5. Step 5: Solve for x
    x = 3,559,459,454.60/86,581.98
  6. Step 6: Final answer
    x = 41,110.86

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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.