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Finding the Fourth Proportional to 72,392.80, 99,883.14 and 41,758.48

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Solution

The fourth proportional to 72,392.80, 99,883.14 and 41,758.48 is: 57,615.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,392.80 : 99,883.14 = 41,758.48 : x
  2. Step 2: Convert to fraction form
    72,392.80/99,883.14 = 41,758.48/x
  3. Step 3: Cross multiply
    72,392.80x = 99,883.14 × 41,758.48
  4. Step 4: Simplify right side
    72,392.80x = 4,170,968,104.03
  5. Step 5: Solve for x
    x = 4,170,968,104.03/72,392.80
  6. Step 6: Final answer
    x = 57,615.79

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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.