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Finding the Fourth Proportional to 57,480.92, 86,190.60 and 25,430.84

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Solution

The fourth proportional to 57,480.92, 86,190.60 and 25,430.84 is: 38,132.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,480.92 : 86,190.60 = 25,430.84 : x
  2. Step 2: Convert to fraction form
    57,480.92/86,190.60 = 25,430.84/x
  3. Step 3: Cross multiply
    57,480.92x = 86,190.60 × 25,430.84
  4. Step 4: Simplify right side
    57,480.92x = 2,191,899,358.10
  5. Step 5: Solve for x
    x = 2,191,899,358.10/57,480.92
  6. Step 6: Final answer
    x = 38,132.64

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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.