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Finding the Fourth Proportional to 217,209.52, 325,865.28 and 67,442.08

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Solution

The fourth proportional to 217,209.52, 325,865.28 and 67,442.08 is: 101,178.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,209.52 : 325,865.28 = 67,442.08 : x
  2. Step 2: Convert to fraction form
    217,209.52/325,865.28 = 67,442.08/x
  3. Step 3: Cross multiply
    217,209.52x = 325,865.28 × 67,442.08
  4. Step 4: Simplify right side
    217,209.52x = 21,977,032,282.98
  5. Step 5: Solve for x
    x = 21,977,032,282.98/217,209.52
  6. Step 6: Final answer
    x = 101,178.96

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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.