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Finding the Fourth Proportional to 1,168.74, 1,760.04 and 1,040.58

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Solution

The fourth proportional to 1,168.74, 1,760.04 and 1,040.58 is: 1,567.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,168.74 : 1,760.04 = 1,040.58 : x
  2. Step 2: Convert to fraction form
    1,168.74/1,760.04 = 1,040.58/x
  3. Step 3: Cross multiply
    1,168.74x = 1,760.04 × 1,040.58
  4. Step 4: Simplify right side
    1,168.74x = 1,831,462.42
  5. Step 5: Solve for x
    x = 1,831,462.42/1,168.74
  6. Step 6: Final answer
    x = 1,567.04

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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.