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Finding the Fourth Proportional to 7,879.01, 10,872.54 and 4,342.25

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Solution

The fourth proportional to 7,879.01, 10,872.54 and 4,342.25 is: 5,992.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,879.01 : 10,872.54 = 4,342.25 : x
  2. Step 2: Convert to fraction form
    7,879.01/10,872.54 = 4,342.25/x
  3. Step 3: Cross multiply
    7,879.01x = 10,872.54 × 4,342.25
  4. Step 4: Simplify right side
    7,879.01x = 47,211,232.45
  5. Step 5: Solve for x
    x = 47,211,232.45/7,879.01
  6. Step 6: Final answer
    x = 5,992.03

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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.