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Finding the Fourth Proportional to 86,468.25, 129,706.36 and 26,492.43

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Solution

The fourth proportional to 86,468.25, 129,706.36 and 26,492.43 is: 39,739.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,468.25 : 129,706.36 = 26,492.43 : x
  2. Step 2: Convert to fraction form
    86,468.25/129,706.36 = 26,492.43/x
  3. Step 3: Cross multiply
    86,468.25x = 129,706.36 × 26,492.43
  4. Step 4: Simplify right side
    86,468.25x = 3,436,236,530.39
  5. Step 5: Solve for x
    x = 3,436,236,530.39/86,468.25
  6. Step 6: Final answer
    x = 39,739.86

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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.