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Finding the Fourth Proportional to 235,964.22, 325,628.96 and 128,533.92

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Solution

The fourth proportional to 235,964.22, 325,628.96 and 128,533.92 is: 177,375.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,964.22 : 325,628.96 = 128,533.92 : x
  2. Step 2: Convert to fraction form
    235,964.22/325,628.96 = 128,533.92/x
  3. Step 3: Cross multiply
    235,964.22x = 325,628.96 × 128,533.92
  4. Step 4: Simplify right side
    235,964.22x = 41,854,366,051.65
  5. Step 5: Solve for x
    x = 41,854,366,051.65/235,964.22
  6. Step 6: Final answer
    x = 177,375.90

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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.