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Finding the Fourth Proportional to 91,156, 136,734.96 and 25,492

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Solution

The fourth proportional to 91,156, 136,734.96 and 25,492 is: 38,238.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,156 : 136,734.96 = 25,492 : x
  2. Step 2: Convert to fraction form
    91,156/136,734.96 = 25,492/x
  3. Step 3: Cross multiply
    91,156x = 136,734.96 × 25,492
  4. Step 4: Simplify right side
    91,156x = 3,485,647,600.32
  5. Step 5: Solve for x
    x = 3,485,647,600.32/91,156
  6. Step 6: Final answer
    x = 38,238.27

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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.