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Finding the Fourth Proportional to 24,609.80, 36,920.10 and 12,135.80

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Solution

The fourth proportional to 24,609.80, 36,920.10 and 12,135.80 is: 18,206.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    24,609.80 : 36,920.10 = 12,135.80 : x
  2. Step 2: Convert to fraction form
    24,609.80/36,920.10 = 12,135.80/x
  3. Step 3: Cross multiply
    24,609.80x = 36,920.10 × 12,135.80
  4. Step 4: Simplify right side
    24,609.80x = 448,054,949.58
  5. Step 5: Solve for x
    x = 448,054,949.58/24,609.80
  6. Step 6: Final answer
    x = 18,206.36

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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.