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Finding the Fourth Proportional to 167,359.79, 230,956.49 and 90,878.51

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Solution

The fourth proportional to 167,359.79, 230,956.49 and 90,878.51 is: 125,412.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,359.79 : 230,956.49 = 90,878.51 : x
  2. Step 2: Convert to fraction form
    167,359.79/230,956.49 = 90,878.51/x
  3. Step 3: Cross multiply
    167,359.79x = 230,956.49 × 90,878.51
  4. Step 4: Simplify right side
    167,359.79x = 20,988,981,686.03
  5. Step 5: Solve for x
    x = 20,988,981,686.03/167,359.79
  6. Step 6: Final answer
    x = 125,412.33

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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.