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Finding the Fourth Proportional to 12,166.70, 18,250.05 and 3,401.60

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Solution

The fourth proportional to 12,166.70, 18,250.05 and 3,401.60 is: 5,102.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,166.70 : 18,250.05 = 3,401.60 : x
  2. Step 2: Convert to fraction form
    12,166.70/18,250.05 = 3,401.60/x
  3. Step 3: Cross multiply
    12,166.70x = 18,250.05 × 3,401.60
  4. Step 4: Simplify right side
    12,166.70x = 62,079,370.08
  5. Step 5: Solve for x
    x = 62,079,370.08/12,166.70
  6. Step 6: Final answer
    x = 5,102.40

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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.