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Finding the Fourth Proportional to 228,617.73, 315,492.41 and 125,255.60

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Solution

The fourth proportional to 228,617.73, 315,492.41 and 125,255.60 is: 172,852.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,617.73 : 315,492.41 = 125,255.60 : x
  2. Step 2: Convert to fraction form
    228,617.73/315,492.41 = 125,255.60/x
  3. Step 3: Cross multiply
    228,617.73x = 315,492.41 × 125,255.60
  4. Step 4: Simplify right side
    228,617.73x = 39,517,191,028.77
  5. Step 5: Solve for x
    x = 39,517,191,028.77/228,617.73
  6. Step 6: Final answer
    x = 172,852.70

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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.