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Finding the Fourth Proportional to 111,959.94, 154,497.72 and 61,658.94

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Solution

The fourth proportional to 111,959.94, 154,497.72 and 61,658.94 is: 85,085.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,959.94 : 154,497.72 = 61,658.94 : x
  2. Step 2: Convert to fraction form
    111,959.94/154,497.72 = 61,658.94/x
  3. Step 3: Cross multiply
    111,959.94x = 154,497.72 × 61,658.94
  4. Step 4: Simplify right side
    111,959.94x = 9,526,165,647.62
  5. Step 5: Solve for x
    x = 9,526,165,647.62/111,959.94
  6. Step 6: Final answer
    x = 85,085.48

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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.