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Finding the Fourth Proportional to 2,708, 4,062.20 and 1,169

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Solution

The fourth proportional to 2,708, 4,062.20 and 1,169 is: 1,753.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,708 : 4,062.20 = 1,169 : x
  2. Step 2: Convert to fraction form
    2,708/4,062.20 = 1,169/x
  3. Step 3: Cross multiply
    2,708x = 4,062.20 × 1,169
  4. Step 4: Simplify right side
    2,708x = 4,748,711.80
  5. Step 5: Solve for x
    x = 4,748,711.80/2,708
  6. Step 6: Final answer
    x = 1,753.59

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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.