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Finding the Fourth Proportional to 236,358.95, 354,325.18 and 86,494.78

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Solution

The fourth proportional to 236,358.95, 354,325.18 and 86,494.78 is: 129,664.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,358.95 : 354,325.18 = 86,494.78 : x
  2. Step 2: Convert to fraction form
    236,358.95/354,325.18 = 86,494.78/x
  3. Step 3: Cross multiply
    236,358.95x = 354,325.18 × 86,494.78
  4. Step 4: Simplify right side
    236,358.95x = 30,647,278,492.56
  5. Step 5: Solve for x
    x = 30,647,278,492.56/236,358.95
  6. Step 6: Final answer
    x = 129,664.13

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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.