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Finding the Fourth Proportional to 1,168.76, 1,753.10 and 291.26

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Solution

The fourth proportional to 1,168.76, 1,753.10 and 291.26 is: 436.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,168.76 : 1,753.10 = 291.26 : x
  2. Step 2: Convert to fraction form
    1,168.76/1,753.10 = 291.26/x
  3. Step 3: Cross multiply
    1,168.76x = 1,753.10 × 291.26
  4. Step 4: Simplify right side
    1,168.76x = 510,613.02
  5. Step 5: Solve for x
    x = 510,613.02/1,168.76
  6. Step 6: Final answer
    x = 436.88

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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.