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Finding the Fourth Proportional to 83,270.80, 124,906.20 and 54,730.45

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Solution

The fourth proportional to 83,270.80, 124,906.20 and 54,730.45 is: 82,095.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,270.80 : 124,906.20 = 54,730.45 : x
  2. Step 2: Convert to fraction form
    83,270.80/124,906.20 = 54,730.45/x
  3. Step 3: Cross multiply
    83,270.80x = 124,906.20 × 54,730.45
  4. Step 4: Simplify right side
    83,270.80x = 6,836,172,533.79
  5. Step 5: Solve for x
    x = 6,836,172,533.79/83,270.80
  6. Step 6: Final answer
    x = 82,095.68

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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.