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Finding the Fourth Proportional to 111,857.06, 154,363.05 and 61,556.06

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Solution

The fourth proportional to 111,857.06, 154,363.05 and 61,556.06 is: 84,947.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,857.06 : 154,363.05 = 61,556.06 : x
  2. Step 2: Convert to fraction form
    111,857.06/154,363.05 = 61,556.06/x
  3. Step 3: Cross multiply
    111,857.06x = 154,363.05 × 61,556.06
  4. Step 4: Simplify right side
    111,857.06x = 9,501,981,553.49
  5. Step 5: Solve for x
    x = 9,501,981,553.49/111,857.06
  6. Step 6: Final answer
    x = 84,947.53

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1.5x scale

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.