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Finding the Fourth Proportional to 111,851.73, 154,356.03 and 60,865.20

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Solution

The fourth proportional to 111,851.73, 154,356.03 and 60,865.20 is: 83,994.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,851.73 : 154,356.03 = 60,865.20 : x
  2. Step 2: Convert to fraction form
    111,851.73/154,356.03 = 60,865.20/x
  3. Step 3: Cross multiply
    111,851.73x = 154,356.03 × 60,865.20
  4. Step 4: Simplify right side
    111,851.73x = 9,394,910,637.16
  5. Step 5: Solve for x
    x = 9,394,910,637.16/111,851.73
  6. Step 6: Final answer
    x = 83,994.33

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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.