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Finding the Fourth Proportional to 6,648.76, 9,174.90 and 3,816.58

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Solution

The fourth proportional to 6,648.76, 9,174.90 and 3,816.58 is: 5,266.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,648.76 : 9,174.90 = 3,816.58 : x
  2. Step 2: Convert to fraction form
    6,648.76/9,174.90 = 3,816.58/x
  3. Step 3: Cross multiply
    6,648.76x = 9,174.90 × 3,816.58
  4. Step 4: Simplify right side
    6,648.76x = 35,016,739.84
  5. Step 5: Solve for x
    x = 35,016,739.84/6,648.76
  6. Step 6: Final answer
    x = 5,266.66

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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.