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Finding the Fourth Proportional to 228,467.57, 315,274.95 and 126,485.87

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Solution

The fourth proportional to 228,467.57, 315,274.95 and 126,485.87 is: 174,544.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,467.57 : 315,274.95 = 126,485.87 : x
  2. Step 2: Convert to fraction form
    228,467.57/315,274.95 = 126,485.87/x
  3. Step 3: Cross multiply
    228,467.57x = 315,274.95 × 126,485.87
  4. Step 4: Simplify right side
    228,467.57x = 39,877,824,763.58
  5. Step 5: Solve for x
    x = 39,877,824,763.58/228,467.57
  6. Step 6: Final answer
    x = 174,544.80

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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.