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Finding the Fourth Proportional to 2,391.92, 3,302.72 and 1,867.04

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Solution

The fourth proportional to 2,391.92, 3,302.72 and 1,867.04 is: 2,577.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,391.92 : 3,302.72 = 1,867.04 : x
  2. Step 2: Convert to fraction form
    2,391.92/3,302.72 = 1,867.04/x
  3. Step 3: Cross multiply
    2,391.92x = 3,302.72 × 1,867.04
  4. Step 4: Simplify right side
    2,391.92x = 6,166,310.35
  5. Step 5: Solve for x
    x = 6,166,310.35/2,391.92
  6. Step 6: Final answer
    x = 2,577.98

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1.5x scale

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.