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Finding the Fourth Proportional to 974.92, 1,452.52 and 928.48

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Solution

The fourth proportional to 974.92, 1,452.52 and 928.48 is: 1,383.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    974.92 : 1,452.52 = 928.48 : x
  2. Step 2: Convert to fraction form
    974.92/1,452.52 = 928.48/x
  3. Step 3: Cross multiply
    974.92x = 1,452.52 × 928.48
  4. Step 4: Simplify right side
    974.92x = 1,348,635.77
  5. Step 5: Solve for x
    x = 1,348,635.77/974.92
  6. Step 6: Final answer
    x = 1,383.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.