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Finding the Fourth Proportional to 6,641.96, 9,966.30 and 5,081

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Solution

The fourth proportional to 6,641.96, 9,966.30 and 5,081 is: 7,624.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,641.96 : 9,966.30 = 5,081 : x
  2. Step 2: Convert to fraction form
    6,641.96/9,966.30 = 5,081/x
  3. Step 3: Cross multiply
    6,641.96x = 9,966.30 × 5,081
  4. Step 4: Simplify right side
    6,641.96x = 50,638,770.30
  5. Step 5: Solve for x
    x = 50,638,770.30/6,641.96
  6. Step 6: Final answer
    x = 7,624.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.