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Finding the Fourth Proportional to 236,399.98, 326,220.60 and 128,963.61

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Solution

The fourth proportional to 236,399.98, 326,220.60 and 128,963.61 is: 177,963.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,399.98 : 326,220.60 = 128,963.61 : x
  2. Step 2: Convert to fraction form
    236,399.98/326,220.60 = 128,963.61/x
  3. Step 3: Cross multiply
    236,399.98x = 326,220.60 × 128,963.61
  4. Step 4: Simplify right side
    236,399.98x = 42,070,584,601.26
  5. Step 5: Solve for x
    x = 42,070,584,601.26/236,399.98
  6. Step 6: Final answer
    x = 177,963.57

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1.5x scale

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.