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Finding the Fourth Proportional to 2,657.11, 4,001.11 and 1,968.66

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Solution

The fourth proportional to 2,657.11, 4,001.11 and 1,968.66 is: 2,964.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,657.11 : 4,001.11 = 1,968.66 : x
  2. Step 2: Convert to fraction form
    2,657.11/4,001.11 = 1,968.66/x
  3. Step 3: Cross multiply
    2,657.11x = 4,001.11 × 1,968.66
  4. Step 4: Simplify right side
    2,657.11x = 7,876,825.21
  5. Step 5: Solve for x
    x = 7,876,825.21/2,657.11
  6. Step 6: Final answer
    x = 2,964.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.