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Finding the Fourth Proportional to 111,857.37, 154,363.18 and 61,556.37

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Solution

The fourth proportional to 111,857.37, 154,363.18 and 61,556.37 is: 84,947.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,857.37 : 154,363.18 = 61,556.37 : x
  2. Step 2: Convert to fraction form
    111,857.37/154,363.18 = 61,556.37/x
  3. Step 3: Cross multiply
    111,857.37x = 154,363.18 × 61,556.37
  4. Step 4: Simplify right side
    111,857.37x = 9,502,036,250.64
  5. Step 5: Solve for x
    x = 9,502,036,250.64/111,857.37
  6. Step 6: Final answer
    x = 84,947.79

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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.