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Finding the Fourth Proportional to 72,269.92, 108,264.60 and 53,260.03

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Solution

The fourth proportional to 72,269.92, 108,264.60 and 53,260.03 is: 79,786.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,269.92 : 108,264.60 = 53,260.03 : x
  2. Step 2: Convert to fraction form
    72,269.92/108,264.60 = 53,260.03/x
  3. Step 3: Cross multiply
    72,269.92x = 108,264.60 × 53,260.03
  4. Step 4: Simplify right side
    72,269.92x = 5,766,175,979.27
  5. Step 5: Solve for x
    x = 5,766,175,979.27/72,269.92
  6. Step 6: Final answer
    x = 79,786.66

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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.