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Finding the Fourth Proportional to 57,169.71, 85,763.66 and 17,718.66

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Solution

The fourth proportional to 57,169.71, 85,763.66 and 17,718.66 is: 26,580.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,169.71 : 85,763.66 = 17,718.66 : x
  2. Step 2: Convert to fraction form
    57,169.71/85,763.66 = 17,718.66/x
  3. Step 3: Cross multiply
    57,169.71x = 85,763.66 × 17,718.66
  4. Step 4: Simplify right side
    57,169.71x = 1,519,617,043.30
  5. Step 5: Solve for x
    x = 1,519,617,043.30/57,169.71
  6. Step 6: Final answer
    x = 26,580.81

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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.