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Finding the Fourth Proportional to 57,340.40, 86,010.60 and 53,193.20

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Solution

The fourth proportional to 57,340.40, 86,010.60 and 53,193.20 is: 79,789.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,340.40 : 86,010.60 = 53,193.20 : x
  2. Step 2: Convert to fraction form
    57,340.40/86,010.60 = 53,193.20/x
  3. Step 3: Cross multiply
    57,340.40x = 86,010.60 × 53,193.20
  4. Step 4: Simplify right side
    57,340.40x = 4,575,179,047.92
  5. Step 5: Solve for x
    x = 4,575,179,047.92/57,340.40
  6. Step 6: Final answer
    x = 79,789.80

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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.