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Finding the Fourth Proportional to 8,767.32, 12,098.78 and 4,788.42

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Solution

The fourth proportional to 8,767.32, 12,098.78 and 4,788.42 is: 6,607.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,767.32 : 12,098.78 = 4,788.42 : x
  2. Step 2: Convert to fraction form
    8,767.32/12,098.78 = 4,788.42/x
  3. Step 3: Cross multiply
    8,767.32x = 12,098.78 × 4,788.42
  4. Step 4: Simplify right side
    8,767.32x = 57,934,040.13
  5. Step 5: Solve for x
    x = 57,934,040.13/8,767.32
  6. Step 6: Final answer
    x = 6,607.95

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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.