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Finding the Fourth Proportional to 55,839.80, 83,759.70 and 53,247.80

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Solution

The fourth proportional to 55,839.80, 83,759.70 and 53,247.80 is: 79,871.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,839.80 : 83,759.70 = 53,247.80 : x
  2. Step 2: Convert to fraction form
    55,839.80/83,759.70 = 53,247.80/x
  3. Step 3: Cross multiply
    55,839.80x = 83,759.70 × 53,247.80
  4. Step 4: Simplify right side
    55,839.80x = 4,460,019,753.66
  5. Step 5: Solve for x
    x = 4,460,019,753.66/55,839.80
  6. Step 6: Final answer
    x = 79,871.70

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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.