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Finding the Fourth Proportional to 236,161.95, 325,893.69 and 128,729.67

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Solution

The fourth proportional to 236,161.95, 325,893.69 and 128,729.67 is: 177,641.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,161.95 : 325,893.69 = 128,729.67 : x
  2. Step 2: Convert to fraction form
    236,161.95/325,893.69 = 128,729.67/x
  3. Step 3: Cross multiply
    236,161.95x = 325,893.69 × 128,729.67
  4. Step 4: Simplify right side
    236,161.95x = 41,952,187,168.78
  5. Step 5: Solve for x
    x = 41,952,187,168.78/236,161.95
  6. Step 6: Final answer
    x = 177,641.60

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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.