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Finding the Fourth Proportional to 84,496.96, 126,701.70 and 45,043.48

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Solution

The fourth proportional to 84,496.96, 126,701.70 and 45,043.48 is: 67,541.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,496.96 : 126,701.70 = 45,043.48 : x
  2. Step 2: Convert to fraction form
    84,496.96/126,701.70 = 45,043.48/x
  3. Step 3: Cross multiply
    84,496.96x = 126,701.70 × 45,043.48
  4. Step 4: Simplify right side
    84,496.96x = 5,707,085,489.92
  5. Step 5: Solve for x
    x = 5,707,085,489.92/84,496.96
  6. Step 6: Final answer
    x = 67,541.90

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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.