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Finding the Fourth Proportional to 228,875.72, 343,229.34 and 79,077.56

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Solution

The fourth proportional to 228,875.72, 343,229.34 and 79,077.56 is: 118,587.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,875.72 : 343,229.34 = 79,077.56 : x
  2. Step 2: Convert to fraction form
    228,875.72/343,229.34 = 79,077.56/x
  3. Step 3: Cross multiply
    228,875.72x = 343,229.34 × 79,077.56
  4. Step 4: Simplify right side
    228,875.72x = 27,141,738,727.61
  5. Step 5: Solve for x
    x = 27,141,738,727.61/228,875.72
  6. Step 6: Final answer
    x = 118,587.23

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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.