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Finding the Fourth Proportional to 86,605.71, 129,912.20 and 27,440.07

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Solution

The fourth proportional to 86,605.71, 129,912.20 and 27,440.07 is: 41,161.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,605.71 : 129,912.20 = 27,440.07 : x
  2. Step 2: Convert to fraction form
    86,605.71/129,912.20 = 27,440.07/x
  3. Step 3: Cross multiply
    86,605.71x = 129,912.20 × 27,440.07
  4. Step 4: Simplify right side
    86,605.71x = 3,564,799,861.85
  5. Step 5: Solve for x
    x = 3,564,799,861.85/86,605.71
  6. Step 6: Final answer
    x = 41,161.26

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1.5x scale

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.