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Finding the Fourth Proportional to 111,394.73, 153,734.44 and 61,103.45

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Solution

The fourth proportional to 111,394.73, 153,734.44 and 61,103.45 is: 84,328.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,394.73 : 153,734.44 = 61,103.45 : x
  2. Step 2: Convert to fraction form
    111,394.73/153,734.44 = 61,103.45/x
  3. Step 3: Cross multiply
    111,394.73x = 153,734.44 × 61,103.45
  4. Step 4: Simplify right side
    111,394.73x = 9,393,704,149.21
  5. Step 5: Solve for x
    x = 9,393,704,149.21/111,394.73
  6. Step 6: Final answer
    x = 84,328.09

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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.