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Finding the Fourth Proportional to 12,416.70, 18,625.05 and 12,200.70

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Solution

The fourth proportional to 12,416.70, 18,625.05 and 12,200.70 is: 18,301.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,416.70 : 18,625.05 = 12,200.70 : x
  2. Step 2: Convert to fraction form
    12,416.70/18,625.05 = 12,200.70/x
  3. Step 3: Cross multiply
    12,416.70x = 18,625.05 × 12,200.70
  4. Step 4: Simplify right side
    12,416.70x = 227,238,647.54
  5. Step 5: Solve for x
    x = 227,238,647.54/12,416.70
  6. Step 6: Final answer
    x = 18,301.05

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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.