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Finding the Fourth Proportional to 86,019.53, 129,029.30 and 26,860.27

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Solution

The fourth proportional to 86,019.53, 129,029.30 and 26,860.27 is: 40,290.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,019.53 : 129,029.30 = 26,860.27 : x
  2. Step 2: Convert to fraction form
    86,019.53/129,029.30 = 26,860.27/x
  3. Step 3: Cross multiply
    86,019.53x = 129,029.30 × 26,860.27
  4. Step 4: Simplify right side
    86,019.53x = 3,465,761,701.61
  5. Step 5: Solve for x
    x = 3,465,761,701.61/86,019.53
  6. Step 6: Final answer
    x = 40,290.41

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Similar ratio
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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.