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Finding the Fourth Proportional to 10,847.12, 14,968.92 and 5,879.12

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Solution

The fourth proportional to 10,847.12, 14,968.92 and 5,879.12 is: 8,113.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,847.12 : 14,968.92 = 5,879.12 : x
  2. Step 2: Convert to fraction form
    10,847.12/14,968.92 = 5,879.12/x
  3. Step 3: Cross multiply
    10,847.12x = 14,968.92 × 5,879.12
  4. Step 4: Simplify right side
    10,847.12x = 88,004,076.95
  5. Step 5: Solve for x
    x = 88,004,076.95/10,847.12
  6. Step 6: Final answer
    x = 8,113.13

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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.