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Finding the Fourth Proportional to 974.52, 1,346.22 and 925.92

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Solution

The fourth proportional to 974.52, 1,346.22 and 925.92 is: 1,279.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    974.52 : 1,346.22 = 925.92 : x
  2. Step 2: Convert to fraction form
    974.52/1,346.22 = 925.92/x
  3. Step 3: Cross multiply
    974.52x = 1,346.22 × 925.92
  4. Step 4: Simplify right side
    974.52x = 1,246,492.02
  5. Step 5: Solve for x
    x = 1,246,492.02/974.52
  6. Step 6: Final answer
    x = 1,279.08

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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.