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Finding the Fourth Proportional to 8,674.75, 11,972.78 and 4,948.75

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Solution

The fourth proportional to 8,674.75, 11,972.78 and 4,948.75 is: 6,830.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,674.75 : 11,972.78 = 4,948.75 : x
  2. Step 2: Convert to fraction form
    8,674.75/11,972.78 = 4,948.75/x
  3. Step 3: Cross multiply
    8,674.75x = 11,972.78 × 4,948.75
  4. Step 4: Simplify right side
    8,674.75x = 59,250,295.03
  5. Step 5: Solve for x
    x = 59,250,295.03/8,674.75
  6. Step 6: Final answer
    x = 6,830.20

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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.