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Finding the Fourth Proportional to 10,017, 15,025.50 and 2,721

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Solution

The fourth proportional to 10,017, 15,025.50 and 2,721 is: 4,081.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,017 : 15,025.50 = 2,721 : x
  2. Step 2: Convert to fraction form
    10,017/15,025.50 = 2,721/x
  3. Step 3: Cross multiply
    10,017x = 15,025.50 × 2,721
  4. Step 4: Simplify right side
    10,017x = 40,884,385.50
  5. Step 5: Solve for x
    x = 40,884,385.50/10,017
  6. Step 6: Final answer
    x = 4,081.50

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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.