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Finding the Fourth Proportional to 34,881.21, 48,135.96 and 18,965.70

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Solution

The fourth proportional to 34,881.21, 48,135.96 and 18,965.70 is: 26,172.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,881.21 : 48,135.96 = 18,965.70 : x
  2. Step 2: Convert to fraction form
    34,881.21/48,135.96 = 18,965.70/x
  3. Step 3: Cross multiply
    34,881.21x = 48,135.96 × 18,965.70
  4. Step 4: Simplify right side
    34,881.21x = 912,932,176.57
  5. Step 5: Solve for x
    x = 912,932,176.57/34,881.21
  6. Step 6: Final answer
    x = 26,172.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.