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Finding the Fourth Proportional to 6,955.60, 9,598.96 and 3,811.78

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Solution

The fourth proportional to 6,955.60, 9,598.96 and 3,811.78 is: 5,260.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,955.60 : 9,598.96 = 3,811.78 : x
  2. Step 2: Convert to fraction form
    6,955.60/9,598.96 = 3,811.78/x
  3. Step 3: Cross multiply
    6,955.60x = 9,598.96 × 3,811.78
  4. Step 4: Simplify right side
    6,955.60x = 36,589,123.75
  5. Step 5: Solve for x
    x = 36,589,123.75/6,955.60
  6. Step 6: Final answer
    x = 5,260.38

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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.