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Finding the Fourth Proportional to 44,900, 61,929.96 and 38,138.72

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Solution

The fourth proportional to 44,900, 61,929.96 and 38,138.72 is: 52,604.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    44,900 : 61,929.96 = 38,138.72 : x
  2. Step 2: Convert to fraction form
    44,900/61,929.96 = 38,138.72/x
  3. Step 3: Cross multiply
    44,900x = 61,929.96 × 38,138.72
  4. Step 4: Simplify right side
    44,900x = 2,361,929,404.05
  5. Step 5: Solve for x
    x = 2,361,929,404.05/44,900
  6. Step 6: Final answer
    x = 52,604.22

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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.