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Finding the Fourth Proportional to 225,979.87, 311,851.36 and 124,007.03

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Solution

The fourth proportional to 225,979.87, 311,851.36 and 124,007.03 is: 171,129.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,979.87 : 311,851.36 = 124,007.03 : x
  2. Step 2: Convert to fraction form
    225,979.87/311,851.36 = 124,007.03/x
  3. Step 3: Cross multiply
    225,979.87x = 311,851.36 × 124,007.03
  4. Step 4: Simplify right side
    225,979.87x = 38,671,760,955.06
  5. Step 5: Solve for x
    x = 38,671,760,955.06/225,979.87
  6. Step 6: Final answer
    x = 171,129.23

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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.