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Finding the Fourth Proportional to 206,191.76, 309,326.52 and 65,912.72

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Solution

The fourth proportional to 206,191.76, 309,326.52 and 65,912.72 is: 98,881.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,191.76 : 309,326.52 = 65,912.72 : x
  2. Step 2: Convert to fraction form
    206,191.76/309,326.52 = 65,912.72/x
  3. Step 3: Cross multiply
    206,191.76x = 309,326.52 × 65,912.72
  4. Step 4: Simplify right side
    206,191.76x = 20,388,552,301.33
  5. Step 5: Solve for x
    x = 20,388,552,301.33/206,191.76
  6. Step 6: Final answer
    x = 98,881.51

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1.5x scale

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.