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Finding the Fourth Proportional to 57,449.80, 85,720.73 and 49,673.80

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Solution

The fourth proportional to 57,449.80, 85,720.73 and 49,673.80 is: 74,118.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,449.80 : 85,720.73 = 49,673.80 : x
  2. Step 2: Convert to fraction form
    57,449.80/85,720.73 = 49,673.80/x
  3. Step 3: Cross multiply
    57,449.80x = 85,720.73 × 49,673.80
  4. Step 4: Simplify right side
    57,449.80x = 4,258,074,397.87
  5. Step 5: Solve for x
    x = 4,258,074,397.87/57,449.80
  6. Step 6: Final answer
    x = 74,118.18

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.