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Finding the Fourth Proportional to 1,174.23, 1,618.56 and 925.14

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Solution

The fourth proportional to 1,174.23, 1,618.56 and 925.14 is: 1,275.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,174.23 : 1,618.56 = 925.14 : x
  2. Step 2: Convert to fraction form
    1,174.23/1,618.56 = 925.14/x
  3. Step 3: Cross multiply
    1,174.23x = 1,618.56 × 925.14
  4. Step 4: Simplify right side
    1,174.23x = 1,497,394.60
  5. Step 5: Solve for x
    x = 1,497,394.60/1,174.23
  6. Step 6: Final answer
    x = 1,275.21

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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.