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Finding the Fourth Proportional to 57,797.52, 86,688.42 and 15,680.31

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Solution

The fourth proportional to 57,797.52, 86,688.42 and 15,680.31 is: 23,518.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,797.52 : 86,688.42 = 15,680.31 : x
  2. Step 2: Convert to fraction form
    57,797.52/86,688.42 = 15,680.31/x
  3. Step 3: Cross multiply
    57,797.52x = 86,688.42 × 15,680.31
  4. Step 4: Simplify right side
    57,797.52x = 1,359,301,299.01
  5. Step 5: Solve for x
    x = 1,359,301,299.01/57,797.52
  6. Step 6: Final answer
    x = 23,518.33

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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.