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Finding the Fourth Proportional to 12,167.70, 18,273.15 and 9,401.10

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Solution

The fourth proportional to 12,167.70, 18,273.15 and 9,401.10 is: 14,118.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,167.70 : 18,273.15 = 9,401.10 : x
  2. Step 2: Convert to fraction form
    12,167.70/18,273.15 = 9,401.10/x
  3. Step 3: Cross multiply
    12,167.70x = 18,273.15 × 9,401.10
  4. Step 4: Simplify right side
    12,167.70x = 171,787,710.47
  5. Step 5: Solve for x
    x = 171,787,710.47/12,167.70
  6. Step 6: Final answer
    x = 14,118.34

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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.