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Finding the Fourth Proportional to 79,064.67, 118,605.29 and 25,760.79

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Solution

The fourth proportional to 79,064.67, 118,605.29 and 25,760.79 is: 38,643.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,064.67 : 118,605.29 = 25,760.79 : x
  2. Step 2: Convert to fraction form
    79,064.67/118,605.29 = 25,760.79/x
  3. Step 3: Cross multiply
    79,064.67x = 118,605.29 × 25,760.79
  4. Step 4: Simplify right side
    79,064.67x = 3,055,365,968.58
  5. Step 5: Solve for x
    x = 3,055,365,968.58/79,064.67
  6. Step 6: Final answer
    x = 38,643.88

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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.