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Finding the Fourth Proportional to 236,335.60, 326,147.02 and 128,905.64

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Solution

The fourth proportional to 236,335.60, 326,147.02 and 128,905.64 is: 177,891.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,335.60 : 326,147.02 = 128,905.64 : x
  2. Step 2: Convert to fraction form
    236,335.60/326,147.02 = 128,905.64/x
  3. Step 3: Cross multiply
    236,335.60x = 326,147.02 × 128,905.64
  4. Step 4: Simplify right side
    236,335.60x = 42,042,190,257.16
  5. Step 5: Solve for x
    x = 42,042,190,257.16/236,335.60
  6. Step 6: Final answer
    x = 177,891.91

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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.