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Finding the Fourth Proportional to 1,102.61, 1,655.51 and 967.30

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Solution

The fourth proportional to 1,102.61, 1,655.51 and 967.30 is: 1,452.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,102.61 : 1,655.51 = 967.30 : x
  2. Step 2: Convert to fraction form
    1,102.61/1,655.51 = 967.30/x
  3. Step 3: Cross multiply
    1,102.61x = 1,655.51 × 967.30
  4. Step 4: Simplify right side
    1,102.61x = 1,601,365.85
  5. Step 5: Solve for x
    x = 1,601,365.85/1,102.61
  6. Step 6: Final answer
    x = 1,452.34

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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.