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Finding the Fourth Proportional to 235,888.71, 325,517.79 and 128,456.37

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Solution

The fourth proportional to 235,888.71, 325,517.79 and 128,456.37 is: 177,265.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,888.71 : 325,517.79 = 128,456.37 : x
  2. Step 2: Convert to fraction form
    235,888.71/325,517.79 = 128,456.37/x
  3. Step 3: Cross multiply
    235,888.71x = 325,517.79 × 128,456.37
  4. Step 4: Simplify right side
    235,888.71x = 41,814,833,673.82
  5. Step 5: Solve for x
    x = 41,814,833,673.82/235,888.71
  6. Step 6: Final answer
    x = 177,265.09

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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.