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Finding the Fourth Proportional to 86,611.89, 129,922.74 and 24,287.25

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Solution

The fourth proportional to 86,611.89, 129,922.74 and 24,287.25 is: 36,432.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,611.89 : 129,922.74 = 24,287.25 : x
  2. Step 2: Convert to fraction form
    86,611.89/129,922.74 = 24,287.25/x
  3. Step 3: Cross multiply
    86,611.89x = 129,922.74 × 24,287.25
  4. Step 4: Simplify right side
    86,611.89x = 3,155,466,067.07
  5. Step 5: Solve for x
    x = 3,155,466,067.07/86,611.89
  6. Step 6: Final answer
    x = 36,432.25

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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.