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Finding the Fourth Proportional to 3,995.01, 5,963.80 and 3,172.15

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Solution

The fourth proportional to 3,995.01, 5,963.80 and 3,172.15 is: 4,735.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,995.01 : 5,963.80 = 3,172.15 : x
  2. Step 2: Convert to fraction form
    3,995.01/5,963.80 = 3,172.15/x
  3. Step 3: Cross multiply
    3,995.01x = 5,963.80 × 3,172.15
  4. Step 4: Simplify right side
    3,995.01x = 18,918,068.17
  5. Step 5: Solve for x
    x = 18,918,068.17/3,995.01
  6. Step 6: Final answer
    x = 4,735.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.