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Finding the Fourth Proportional to 1,197.17, 1,651.17 and 1,049.55

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Solution

The fourth proportional to 1,197.17, 1,651.17 and 1,049.55 is: 1,447.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,197.17 : 1,651.17 = 1,049.55 : x
  2. Step 2: Convert to fraction form
    1,197.17/1,651.17 = 1,049.55/x
  3. Step 3: Cross multiply
    1,197.17x = 1,651.17 × 1,049.55
  4. Step 4: Simplify right side
    1,197.17x = 1,732,985.47
  5. Step 5: Solve for x
    x = 1,732,985.47/1,197.17
  6. Step 6: Final answer
    x = 1,447.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.