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Finding the Fourth Proportional to 83,218.70, 124,825.31 and 33,285.39

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Solution

The fourth proportional to 83,218.70, 124,825.31 and 33,285.39 is: 49,926.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,218.70 : 124,825.31 = 33,285.39 : x
  2. Step 2: Convert to fraction form
    83,218.70/124,825.31 = 33,285.39/x
  3. Step 3: Cross multiply
    83,218.70x = 124,825.31 × 33,285.39
  4. Step 4: Simplify right side
    83,218.70x = 4,154,859,042.01
  5. Step 5: Solve for x
    x = 4,154,859,042.01/83,218.70
  6. Step 6: Final answer
    x = 49,926.99

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1.5x scale

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.