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Finding the Fourth Proportional to 202,721.80, 303,980.70 and 62,462.20

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Solution

The fourth proportional to 202,721.80, 303,980.70 and 62,462.20 is: 93,661.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,721.80 : 303,980.70 = 62,462.20 : x
  2. Step 2: Convert to fraction form
    202,721.80/303,980.70 = 62,462.20/x
  3. Step 3: Cross multiply
    202,721.80x = 303,980.70 × 62,462.20
  4. Step 4: Simplify right side
    202,721.80x = 18,987,303,279.54
  5. Step 5: Solve for x
    x = 18,987,303,279.54/202,721.80
  6. Step 6: Final answer
    x = 93,661.87

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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.