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Finding the Fourth Proportional to 216,752.80, 325,820.40 and 204,311.20

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Solution

The fourth proportional to 216,752.80, 325,820.40 and 204,311.20 is: 307,118.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,752.80 : 325,820.40 = 204,311.20 : x
  2. Step 2: Convert to fraction form
    216,752.80/325,820.40 = 204,311.20/x
  3. Step 3: Cross multiply
    216,752.80x = 325,820.40 × 204,311.20
  4. Step 4: Simplify right side
    216,752.80x = 66,568,756,908.48
  5. Step 5: Solve for x
    x = 66,568,756,908.48/216,752.80
  6. Step 6: Final answer
    x = 307,118.33

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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.