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Finding the Fourth Proportional to 5,251.92, 7,879.42 and 1,554.24

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Solution

The fourth proportional to 5,251.92, 7,879.42 and 1,554.24 is: 2,331.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,251.92 : 7,879.42 = 1,554.24 : x
  2. Step 2: Convert to fraction form
    5,251.92/7,879.42 = 1,554.24/x
  3. Step 3: Cross multiply
    5,251.92x = 7,879.42 × 1,554.24
  4. Step 4: Simplify right side
    5,251.92x = 12,246,509.74
  5. Step 5: Solve for x
    x = 12,246,509.74/5,251.92
  6. Step 6: Final answer
    x = 2,331.82

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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.