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Finding the Fourth Proportional to 34,879.71, 48,133.89 and 18,964.20

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Solution

The fourth proportional to 34,879.71, 48,133.89 and 18,964.20 is: 26,170.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,879.71 : 48,133.89 = 18,964.20 : x
  2. Step 2: Convert to fraction form
    34,879.71/48,133.89 = 18,964.20/x
  3. Step 3: Cross multiply
    34,879.71x = 48,133.89 × 18,964.20
  4. Step 4: Simplify right side
    34,879.71x = 912,820,716.74
  5. Step 5: Solve for x
    x = 912,820,716.74/34,879.71
  6. Step 6: Final answer
    x = 26,170.54

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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.