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Finding the Fourth Proportional to 220,633.86, 330,637.92 and 92,412.01

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Solution

The fourth proportional to 220,633.86, 330,637.92 and 92,412.01 is: 138,486.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,633.86 : 330,637.92 = 92,412.01 : x
  2. Step 2: Convert to fraction form
    220,633.86/330,637.92 = 92,412.01/x
  3. Step 3: Cross multiply
    220,633.86x = 330,637.92 × 92,412.01
  4. Step 4: Simplify right side
    220,633.86x = 30,554,914,769.42
  5. Step 5: Solve for x
    x = 30,554,914,769.42/220,633.86
  6. Step 6: Final answer
    x = 138,486.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.