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Finding the Fourth Proportional to 4,791.34, 6,612 and 2,666.88

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Solution

The fourth proportional to 4,791.34, 6,612 and 2,666.88 is: 3,680.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,791.34 : 6,612 = 2,666.88 : x
  2. Step 2: Convert to fraction form
    4,791.34/6,612 = 2,666.88/x
  3. Step 3: Cross multiply
    4,791.34x = 6,612 × 2,666.88
  4. Step 4: Simplify right side
    4,791.34x = 17,633,410.56
  5. Step 5: Solve for x
    x = 17,633,410.56/4,791.34
  6. Step 6: Final answer
    x = 3,680.27

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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.