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Finding the Fourth Proportional to 3,465.86, 4,780.13 and 3,067.92

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Solution

The fourth proportional to 3,465.86, 4,780.13 and 3,067.92 is: 4,231.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,465.86 : 4,780.13 = 3,067.92 : x
  2. Step 2: Convert to fraction form
    3,465.86/4,780.13 = 3,067.92/x
  3. Step 3: Cross multiply
    3,465.86x = 4,780.13 × 3,067.92
  4. Step 4: Simplify right side
    3,465.86x = 14,665,041.09
  5. Step 5: Solve for x
    x = 14,665,041.09/3,465.86
  6. Step 6: Final answer
    x = 4,231.29

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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.