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Finding the Fourth Proportional to 4,886.92, 7,331.72 and 1,967.28

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Solution

The fourth proportional to 4,886.92, 7,331.72 and 1,967.28 is: 2,951.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,886.92 : 7,331.72 = 1,967.28 : x
  2. Step 2: Convert to fraction form
    4,886.92/7,331.72 = 1,967.28/x
  3. Step 3: Cross multiply
    4,886.92x = 7,331.72 × 1,967.28
  4. Step 4: Simplify right side
    4,886.92x = 14,423,546.12
  5. Step 5: Solve for x
    x = 14,423,546.12/4,886.92
  6. Step 6: Final answer
    x = 2,951.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.