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Finding the Fourth Proportional to 228,476.70, 315,309.49 and 126,513.44

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Solution

The fourth proportional to 228,476.70, 315,309.49 and 126,513.44 is: 174,595.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,476.70 : 315,309.49 = 126,513.44 : x
  2. Step 2: Convert to fraction form
    228,476.70/315,309.49 = 126,513.44/x
  3. Step 3: Cross multiply
    228,476.70x = 315,309.49 × 126,513.44
  4. Step 4: Simplify right side
    228,476.70x = 39,890,888,244.55
  5. Step 5: Solve for x
    x = 39,890,888,244.55/228,476.70
  6. Step 6: Final answer
    x = 174,595.00

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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.