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Finding the Fourth Proportional to 235,453.22, 324,929.50 and 128,023.97

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Solution

The fourth proportional to 235,453.22, 324,929.50 and 128,023.97 is: 176,675.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,453.22 : 324,929.50 = 128,023.97 : x
  2. Step 2: Convert to fraction form
    235,453.22/324,929.50 = 128,023.97/x
  3. Step 3: Cross multiply
    235,453.22x = 324,929.50 × 128,023.97
  4. Step 4: Simplify right side
    235,453.22x = 41,598,765,052.38
  5. Step 5: Solve for x
    x = 41,598,765,052.38/235,453.22
  6. Step 6: Final answer
    x = 176,675.29

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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.