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Finding the Fourth Proportional to 83,812, 125,725.56 and 21,483.04

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Solution

The fourth proportional to 83,812, 125,725.56 and 21,483.04 is: 32,226.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,812 : 125,725.56 = 21,483.04 : x
  2. Step 2: Convert to fraction form
    83,812/125,725.56 = 21,483.04/x
  3. Step 3: Cross multiply
    83,812x = 125,725.56 × 21,483.04
  4. Step 4: Simplify right side
    83,812x = 2,700,967,234.50
  5. Step 5: Solve for x
    x = 2,700,967,234.50/83,812
  6. Step 6: Final answer
    x = 32,226.50

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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.