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Finding the Fourth Proportional to 235,791.06, 325,395.81 and 128,364.18

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Solution

The fourth proportional to 235,791.06, 325,395.81 and 128,364.18 is: 177,144.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,791.06 : 325,395.81 = 128,364.18 : x
  2. Step 2: Convert to fraction form
    235,791.06/325,395.81 = 128,364.18/x
  3. Step 3: Cross multiply
    235,791.06x = 325,395.81 × 128,364.18
  4. Step 4: Simplify right side
    235,791.06x = 41,769,166,326.09
  5. Step 5: Solve for x
    x = 41,769,166,326.09/235,791.06
  6. Step 6: Final answer
    x = 177,144.83

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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.