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Finding the Fourth Proportional to 236,038.68, 325,729.26 and 128,609.46

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Solution

The fourth proportional to 236,038.68, 325,729.26 and 128,609.46 is: 177,478.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,038.68 : 325,729.26 = 128,609.46 : x
  2. Step 2: Convert to fraction form
    236,038.68/325,729.26 = 128,609.46/x
  3. Step 3: Cross multiply
    236,038.68x = 325,729.26 × 128,609.46
  4. Step 4: Simplify right side
    236,038.68x = 41,891,864,234.80
  5. Step 5: Solve for x
    x = 41,891,864,234.80/236,038.68
  6. Step 6: Final answer
    x = 177,478.81

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.