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Finding the Fourth Proportional to 83,212.20, 124,806 and 27,057.40

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Solution

The fourth proportional to 83,212.20, 124,806 and 27,057.40 is: 40,582.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,212.20 : 124,806 = 27,057.40 : x
  2. Step 2: Convert to fraction form
    83,212.20/124,806 = 27,057.40/x
  3. Step 3: Cross multiply
    83,212.20x = 124,806 × 27,057.40
  4. Step 4: Simplify right side
    83,212.20x = 3,376,925,864.40
  5. Step 5: Solve for x
    x = 3,376,925,864.40/83,212.20
  6. Step 6: Final answer
    x = 40,582.10

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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.