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Finding the Fourth Proportional to 171,335.26, 236,516.80 and 128,904.22

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Solution

The fourth proportional to 171,335.26, 236,516.80 and 128,904.22 is: 177,943.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,335.26 : 236,516.80 = 128,904.22 : x
  2. Step 2: Convert to fraction form
    171,335.26/236,516.80 = 128,904.22/x
  3. Step 3: Cross multiply
    171,335.26x = 236,516.80 × 128,904.22
  4. Step 4: Simplify right side
    171,335.26x = 30,488,013,620.90
  5. Step 5: Solve for x
    x = 30,488,013,620.90/171,335.26
  6. Step 6: Final answer
    x = 177,943.60

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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.