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Finding the Fourth Proportional to 236,138.94, 325,862.28 and 128,706.72

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Solution

The fourth proportional to 236,138.94, 325,862.28 and 128,706.72 is: 177,610.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,138.94 : 325,862.28 = 128,706.72 : x
  2. Step 2: Convert to fraction form
    236,138.94/325,862.28 = 128,706.72/x
  3. Step 3: Cross multiply
    236,138.94x = 325,862.28 × 128,706.72
  4. Step 4: Simplify right side
    236,138.94x = 41,940,665,230.52
  5. Step 5: Solve for x
    x = 41,940,665,230.52/236,138.94
  6. Step 6: Final answer
    x = 177,610.12

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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.