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Finding the Fourth Proportional to 8,772.75, 12,107.21 and 4,996.08

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Solution

The fourth proportional to 8,772.75, 12,107.21 and 4,996.08 is: 6,895.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,772.75 : 12,107.21 = 4,996.08 : x
  2. Step 2: Convert to fraction form
    8,772.75/12,107.21 = 4,996.08/x
  3. Step 3: Cross multiply
    8,772.75x = 12,107.21 × 4,996.08
  4. Step 4: Simplify right side
    8,772.75x = 60,488,564.76
  5. Step 5: Solve for x
    x = 60,488,564.76/8,772.75
  6. Step 6: Final answer
    x = 6,895.05

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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.