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Finding the Fourth Proportional to 216,847.80, 325,320.30 and 83,716.20

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Solution

The fourth proportional to 216,847.80, 325,320.30 and 83,716.20 is: 125,593.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,847.80 : 325,320.30 = 83,716.20 : x
  2. Step 2: Convert to fraction form
    216,847.80/325,320.30 = 83,716.20/x
  3. Step 3: Cross multiply
    216,847.80x = 325,320.30 × 83,716.20
  4. Step 4: Simplify right side
    216,847.80x = 27,234,579,298.86
  5. Step 5: Solve for x
    x = 27,234,579,298.86/216,847.80
  6. Step 6: Final answer
    x = 125,593.06

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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.