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Finding the Fourth Proportional to 228,851.10, 315,833.22 and 126,908.55

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Solution

The fourth proportional to 228,851.10, 315,833.22 and 126,908.55 is: 175,144.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,851.10 : 315,833.22 = 126,908.55 : x
  2. Step 2: Convert to fraction form
    228,851.10/315,833.22 = 126,908.55/x
  3. Step 3: Cross multiply
    228,851.10x = 315,833.22 × 126,908.55
  4. Step 4: Simplify right side
    228,851.10x = 40,081,935,992.03
  5. Step 5: Solve for x
    x = 40,081,935,992.03/228,851.10
  6. Step 6: Final answer
    x = 175,144.17

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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.