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Finding the Fourth Proportional to 235,761.56, 325,358.24 and 128,338.80

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Solution

The fourth proportional to 235,761.56, 325,358.24 and 128,338.80 is: 177,111.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,761.56 : 325,358.24 = 128,338.80 : x
  2. Step 2: Convert to fraction form
    235,761.56/325,358.24 = 128,338.80/x
  3. Step 3: Cross multiply
    235,761.56x = 325,358.24 × 128,338.80
  4. Step 4: Simplify right side
    235,761.56x = 41,756,086,091.71
  5. Step 5: Solve for x
    x = 41,756,086,091.71/235,761.56
  6. Step 6: Final answer
    x = 177,111.51

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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.