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Finding the Fourth Proportional to 218,594.05, 301,660.47 and 126,731.24

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Solution

The fourth proportional to 218,594.05, 301,660.47 and 126,731.24 is: 174,889.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,594.05 : 301,660.47 = 126,731.24 : x
  2. Step 2: Convert to fraction form
    218,594.05/301,660.47 = 126,731.24/x
  3. Step 3: Cross multiply
    218,594.05x = 301,660.47 × 126,731.24
  4. Step 4: Simplify right side
    218,594.05x = 38,229,805,422.08
  5. Step 5: Solve for x
    x = 38,229,805,422.08/218,594.05
  6. Step 6: Final answer
    x = 174,889.51

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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.