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Finding the Fourth Proportional to 206,339.90, 309,554.39 and 64,182.47

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Solution

The fourth proportional to 206,339.90, 309,554.39 and 64,182.47 is: 96,287.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,339.90 : 309,554.39 = 64,182.47 : x
  2. Step 2: Convert to fraction form
    206,339.90/309,554.39 = 64,182.47/x
  3. Step 3: Cross multiply
    206,339.90x = 309,554.39 × 64,182.47
  4. Step 4: Simplify right side
    206,339.90x = 19,867,963,480.86
  5. Step 5: Solve for x
    x = 19,867,963,480.86/206,339.90
  6. Step 6: Final answer
    x = 96,287.55

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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.