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Finding the Fourth Proportional to 171,332.26, 236,512.65 and 128,901.22

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Solution

The fourth proportional to 171,332.26, 236,512.65 and 128,901.22 is: 177,939.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,332.26 : 236,512.65 = 128,901.22 : x
  2. Step 2: Convert to fraction form
    171,332.26/236,512.65 = 128,901.22/x
  3. Step 3: Cross multiply
    171,332.26x = 236,512.65 × 128,901.22
  4. Step 4: Simplify right side
    171,332.26x = 30,486,769,130.43
  5. Step 5: Solve for x
    x = 30,486,769,130.43/171,332.26
  6. Step 6: Final answer
    x = 177,939.46

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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.