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Finding the Fourth Proportional to 111,992.88, 154,548.01 and 61,005.01

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Solution

The fourth proportional to 111,992.88, 154,548.01 and 61,005.01 is: 84,185.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,992.88 : 154,548.01 = 61,005.01 : x
  2. Step 2: Convert to fraction form
    111,992.88/154,548.01 = 61,005.01/x
  3. Step 3: Cross multiply
    111,992.88x = 154,548.01 × 61,005.01
  4. Step 4: Simplify right side
    111,992.88x = 9,428,202,895.53
  5. Step 5: Solve for x
    x = 9,428,202,895.53/111,992.88
  6. Step 6: Final answer
    x = 84,185.73

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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.