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Finding the Fourth Proportional to 235,823.57, 325,425.80 and 128,393.37

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Solution

The fourth proportional to 235,823.57, 325,425.80 and 128,393.37 is: 177,177.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,823.57 : 325,425.80 = 128,393.37 : x
  2. Step 2: Convert to fraction form
    235,823.57/325,425.80 = 128,393.37/x
  3. Step 3: Cross multiply
    235,823.57x = 325,425.80 × 128,393.37
  4. Step 4: Simplify right side
    235,823.57x = 41,782,515,467.93
  5. Step 5: Solve for x
    x = 41,782,515,467.93/235,823.57
  6. Step 6: Final answer
    x = 177,177.01

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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.