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Finding the Fourth Proportional to 7,352.65, 10,146.72 and 3,995.47

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Solution

The fourth proportional to 7,352.65, 10,146.72 and 3,995.47 is: 5,513.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,352.65 : 10,146.72 = 3,995.47 : x
  2. Step 2: Convert to fraction form
    7,352.65/10,146.72 = 3,995.47/x
  3. Step 3: Cross multiply
    7,352.65x = 10,146.72 × 3,995.47
  4. Step 4: Simplify right side
    7,352.65x = 40,540,915.36
  5. Step 5: Solve for x
    x = 40,540,915.36/7,352.65
  6. Step 6: Final answer
    x = 5,513.78

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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.