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Finding the Fourth Proportional to 6,863.59, 9,471.75 and 3,719.77

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Solution

The fourth proportional to 6,863.59, 9,471.75 and 3,719.77 is: 5,133.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,863.59 : 9,471.75 = 3,719.77 : x
  2. Step 2: Convert to fraction form
    6,863.59/9,471.75 = 3,719.77/x
  3. Step 3: Cross multiply
    6,863.59x = 9,471.75 × 3,719.77
  4. Step 4: Simplify right side
    6,863.59x = 35,232,731.50
  5. Step 5: Solve for x
    x = 35,232,731.50/6,863.59
  6. Step 6: Final answer
    x = 5,133.28

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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.