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Finding the Fourth Proportional to 228,701.35, 315,614.79 and 126,717.27

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Solution

The fourth proportional to 228,701.35, 315,614.79 and 126,717.27 is: 174,873.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,701.35 : 315,614.79 = 126,717.27 : x
  2. Step 2: Convert to fraction form
    228,701.35/315,614.79 = 126,717.27/x
  3. Step 3: Cross multiply
    228,701.35x = 315,614.79 × 126,717.27
  4. Step 4: Simplify right side
    228,701.35x = 39,993,845,152.20
  5. Step 5: Solve for x
    x = 39,993,845,152.20/228,701.35
  6. Step 6: Final answer
    x = 174,873.67

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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.