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Finding the Fourth Proportional to 200,689.20, 276,963.52 and 111,265.20

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Solution

The fourth proportional to 200,689.20, 276,963.52 and 111,265.20 is: 153,552.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,689.20 : 276,963.52 = 111,265.20 : x
  2. Step 2: Convert to fraction form
    200,689.20/276,963.52 = 111,265.20/x
  3. Step 3: Cross multiply
    200,689.20x = 276,963.52 × 111,265.20
  4. Step 4: Simplify right side
    200,689.20x = 30,816,401,445.50
  5. Step 5: Solve for x
    x = 30,816,401,445.50/200,689.20
  6. Step 6: Final answer
    x = 153,552.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.