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Finding the Fourth Proportional to 75,081.99, 103,698.18 and 51,167.15

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Solution

The fourth proportional to 75,081.99, 103,698.18 and 51,167.15 is: 70,668.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,081.99 : 103,698.18 = 51,167.15 : x
  2. Step 2: Convert to fraction form
    75,081.99/103,698.18 = 51,167.15/x
  3. Step 3: Cross multiply
    75,081.99x = 103,698.18 × 51,167.15
  4. Step 4: Simplify right side
    75,081.99x = 5,305,940,330.79
  5. Step 5: Solve for x
    x = 5,305,940,330.79/75,081.99
  6. Step 6: Final answer
    x = 70,668.62

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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.