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Finding the Fourth Proportional to 73,190.78, 101,003.64 and 39,656.78

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Solution

The fourth proportional to 73,190.78, 101,003.64 and 39,656.78 is: 54,726.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,190.78 : 101,003.64 = 39,656.78 : x
  2. Step 2: Convert to fraction form
    73,190.78/101,003.64 = 39,656.78/x
  3. Step 3: Cross multiply
    73,190.78x = 101,003.64 × 39,656.78
  4. Step 4: Simplify right side
    73,190.78x = 4,005,479,130.68
  5. Step 5: Solve for x
    x = 4,005,479,130.68/73,190.78
  6. Step 6: Final answer
    x = 54,726.55

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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.