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Finding the Fourth Proportional to 8,879.56, 12,252.90 and 4,899.64

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Solution

The fourth proportional to 8,879.56, 12,252.90 and 4,899.64 is: 6,761.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,879.56 : 12,252.90 = 4,899.64 : x
  2. Step 2: Convert to fraction form
    8,879.56/12,252.90 = 4,899.64/x
  3. Step 3: Cross multiply
    8,879.56x = 12,252.90 × 4,899.64
  4. Step 4: Simplify right side
    8,879.56x = 60,034,798.96
  5. Step 5: Solve for x
    x = 60,034,798.96/8,879.56
  6. Step 6: Final answer
    x = 6,761.01

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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.