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Finding the Fourth Proportional to 4,908.61, 6,766.72 and 3,858.85

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Solution

The fourth proportional to 4,908.61, 6,766.72 and 3,858.85 is: 5,319.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,908.61 : 6,766.72 = 3,858.85 : x
  2. Step 2: Convert to fraction form
    4,908.61/6,766.72 = 3,858.85/x
  3. Step 3: Cross multiply
    4,908.61x = 6,766.72 × 3,858.85
  4. Step 4: Simplify right side
    4,908.61x = 26,111,757.47
  5. Step 5: Solve for x
    x = 26,111,757.47/4,908.61
  6. Step 6: Final answer
    x = 5,319.58

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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.