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Finding the Fourth Proportional to 57,862.79, 86,793.55 and 43,908.51

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Solution

The fourth proportional to 57,862.79, 86,793.55 and 43,908.51 is: 65,862.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,862.79 : 86,793.55 = 43,908.51 : x
  2. Step 2: Convert to fraction form
    57,862.79/86,793.55 = 43,908.51/x
  3. Step 3: Cross multiply
    57,862.79x = 86,793.55 × 43,908.51
  4. Step 4: Simplify right side
    57,862.79x = 3,810,975,348.34
  5. Step 5: Solve for x
    x = 3,810,975,348.34/57,862.79
  6. Step 6: Final answer
    x = 65,862.29

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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.