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Finding the Fourth Proportional to 86,618.77, 129,931.80 and 27,453.13

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Solution

The fourth proportional to 86,618.77, 129,931.80 and 27,453.13 is: 41,180.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,618.77 : 129,931.80 = 27,453.13 : x
  2. Step 2: Convert to fraction form
    86,618.77/129,931.80 = 27,453.13/x
  3. Step 3: Cross multiply
    86,618.77x = 129,931.80 × 27,453.13
  4. Step 4: Simplify right side
    86,618.77x = 3,567,034,168.76
  5. Step 5: Solve for x
    x = 3,567,034,168.76/86,618.77
  6. Step 6: Final answer
    x = 41,180.85

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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.