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Finding the Fourth Proportional to 86,552.72, 129,842.54 and 27,382.76

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Solution

The fourth proportional to 86,552.72, 129,842.54 and 27,382.76 is: 41,078.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,552.72 : 129,842.54 = 27,382.76 : x
  2. Step 2: Convert to fraction form
    86,552.72/129,842.54 = 27,382.76/x
  3. Step 3: Cross multiply
    86,552.72x = 129,842.54 × 27,382.76
  4. Step 4: Simplify right side
    86,552.72x = 3,555,447,110.61
  5. Step 5: Solve for x
    x = 3,555,447,110.61/86,552.72
  6. Step 6: Final answer
    x = 41,078.40

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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.