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Finding the Fourth Proportional to 82,867.80, 124,301.70 and 36,211.80

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Solution

The fourth proportional to 82,867.80, 124,301.70 and 36,211.80 is: 54,317.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,867.80 : 124,301.70 = 36,211.80 : x
  2. Step 2: Convert to fraction form
    82,867.80/124,301.70 = 36,211.80/x
  3. Step 3: Cross multiply
    82,867.80x = 124,301.70 × 36,211.80
  4. Step 4: Simplify right side
    82,867.80x = 4,501,188,300.06
  5. Step 5: Solve for x
    x = 4,501,188,300.06/82,867.80
  6. Step 6: Final answer
    x = 54,317.70

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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.