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Finding the Fourth Proportional to 8,339.12, 11,508.78 and 4,803.08

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Solution

The fourth proportional to 8,339.12, 11,508.78 and 4,803.08 is: 6,628.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,339.12 : 11,508.78 = 4,803.08 : x
  2. Step 2: Convert to fraction form
    8,339.12/11,508.78 = 4,803.08/x
  3. Step 3: Cross multiply
    8,339.12x = 11,508.78 × 4,803.08
  4. Step 4: Simplify right side
    8,339.12x = 55,277,591.04
  5. Step 5: Solve for x
    x = 55,277,591.04/8,339.12
  6. Step 6: Final answer
    x = 6,628.71

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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.