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Finding the Fourth Proportional to 109,963.78, 151,750.47 and 59,662.78

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Solution

The fourth proportional to 109,963.78, 151,750.47 and 59,662.78 is: 82,334.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,963.78 : 151,750.47 = 59,662.78 : x
  2. Step 2: Convert to fraction form
    109,963.78/151,750.47 = 59,662.78/x
  3. Step 3: Cross multiply
    109,963.78x = 151,750.47 × 59,662.78
  4. Step 4: Simplify right side
    109,963.78x = 9,053,854,906.51
  5. Step 5: Solve for x
    x = 9,053,854,906.51/109,963.78
  6. Step 6: Final answer
    x = 82,334.88

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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.