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Finding the Fourth Proportional to 57,720.60, 79,580.34 and 47,334.02

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Solution

The fourth proportional to 57,720.60, 79,580.34 and 47,334.02 is: 65,260.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,720.60 : 79,580.34 = 47,334.02 : x
  2. Step 2: Convert to fraction form
    57,720.60/79,580.34 = 47,334.02/x
  3. Step 3: Cross multiply
    57,720.60x = 79,580.34 × 47,334.02
  4. Step 4: Simplify right side
    57,720.60x = 3,766,857,007.27
  5. Step 5: Solve for x
    x = 3,766,857,007.27/57,720.60
  6. Step 6: Final answer
    x = 65,260.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.