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Finding the Fourth Proportional to 83,091.60, 124,556.40 and 47,516.40

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Solution

The fourth proportional to 83,091.60, 124,556.40 and 47,516.40 is: 71,228.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,091.60 : 124,556.40 = 47,516.40 : x
  2. Step 2: Convert to fraction form
    83,091.60/124,556.40 = 47,516.40/x
  3. Step 3: Cross multiply
    83,091.60x = 124,556.40 × 47,516.40
  4. Step 4: Simplify right side
    83,091.60x = 5,918,471,724.96
  5. Step 5: Solve for x
    x = 5,918,471,724.96/83,091.60
  6. Step 6: Final answer
    x = 71,228.28

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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.