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Finding the Fourth Proportional to 53,166.90, 79,750.47 and 49,919.22

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Solution

The fourth proportional to 53,166.90, 79,750.47 and 49,919.22 is: 74,878.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,166.90 : 79,750.47 = 49,919.22 : x
  2. Step 2: Convert to fraction form
    53,166.90/79,750.47 = 49,919.22/x
  3. Step 3: Cross multiply
    53,166.90x = 79,750.47 × 49,919.22
  4. Step 4: Simplify right side
    53,166.90x = 3,981,081,257.03
  5. Step 5: Solve for x
    x = 3,981,081,257.03/53,166.90
  6. Step 6: Final answer
    x = 74,878.94

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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.