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Finding the Fourth Proportional to 228,393.84, 315,175.61 and 126,423.75

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Solution

The fourth proportional to 228,393.84, 315,175.61 and 126,423.75 is: 174,460.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,393.84 : 315,175.61 = 126,423.75 : x
  2. Step 2: Convert to fraction form
    228,393.84/315,175.61 = 126,423.75/x
  3. Step 3: Cross multiply
    228,393.84x = 315,175.61 × 126,423.75
  4. Step 4: Simplify right side
    228,393.84x = 39,845,683,311.57
  5. Step 5: Solve for x
    x = 39,845,683,311.57/228,393.84
  6. Step 6: Final answer
    x = 174,460.41

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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.