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Finding the Fourth Proportional to 7,065.15, 9,749.82 and 4,080.97

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Solution

The fourth proportional to 7,065.15, 9,749.82 and 4,080.97 is: 5,631.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,065.15 : 9,749.82 = 4,080.97 : x
  2. Step 2: Convert to fraction form
    7,065.15/9,749.82 = 4,080.97/x
  3. Step 3: Cross multiply
    7,065.15x = 9,749.82 × 4,080.97
  4. Step 4: Simplify right side
    7,065.15x = 39,788,722.93
  5. Step 5: Solve for x
    x = 39,788,722.93/7,065.15
  6. Step 6: Final answer
    x = 5,631.69

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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.