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Finding the Fourth Proportional to 217,095.28, 325,689.72 and 67,332.60

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Solution

The fourth proportional to 217,095.28, 325,689.72 and 67,332.60 is: 101,013.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,095.28 : 325,689.72 = 67,332.60 : x
  2. Step 2: Convert to fraction form
    217,095.28/325,689.72 = 67,332.60/x
  3. Step 3: Cross multiply
    217,095.28x = 325,689.72 × 67,332.60
  4. Step 4: Simplify right side
    217,095.28x = 21,929,535,640.87
  5. Step 5: Solve for x
    x = 21,929,535,640.87/217,095.28
  6. Step 6: Final answer
    x = 101,013.42

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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.