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Finding the Fourth Proportional to 111,857.07, 154,362.78 and 61,556.07

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Solution

The fourth proportional to 111,857.07, 154,362.78 and 61,556.07 is: 84,947.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,857.07 : 154,362.78 = 61,556.07 : x
  2. Step 2: Convert to fraction form
    111,857.07/154,362.78 = 61,556.07/x
  3. Step 3: Cross multiply
    111,857.07x = 154,362.78 × 61,556.07
  4. Step 4: Simplify right side
    111,857.07x = 9,501,966,091.07
  5. Step 5: Solve for x
    x = 9,501,966,091.07/111,857.07
  6. Step 6: Final answer
    x = 84,947.39

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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.