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Finding the Fourth Proportional to 315,054.90, 472,611.78 and 125,469.54

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Solution

The fourth proportional to 315,054.90, 472,611.78 and 125,469.54 is: 188,216.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,054.90 : 472,611.78 = 125,469.54 : x
  2. Step 2: Convert to fraction form
    315,054.90/472,611.78 = 125,469.54/x
  3. Step 3: Cross multiply
    315,054.90x = 472,611.78 × 125,469.54
  4. Step 4: Simplify right side
    315,054.90x = 59,298,382,635.18
  5. Step 5: Solve for x
    x = 59,298,382,635.18/315,054.90
  6. Step 6: Final answer
    x = 188,216.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.