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Finding the Fourth Proportional to 4,860.45, 6,691.95 and 4,112.82

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Solution

The fourth proportional to 4,860.45, 6,691.95 and 4,112.82 is: 5,662.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,860.45 : 6,691.95 = 4,112.82 : x
  2. Step 2: Convert to fraction form
    4,860.45/6,691.95 = 4,112.82/x
  3. Step 3: Cross multiply
    4,860.45x = 6,691.95 × 4,112.82
  4. Step 4: Simplify right side
    4,860.45x = 27,522,785.80
  5. Step 5: Solve for x
    x = 27,522,785.80/4,860.45
  6. Step 6: Final answer
    x = 5,662.60

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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.