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Finding the Fourth Proportional to 128,594.16, 193,187.70 and 123,279.84

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Solution

The fourth proportional to 128,594.16, 193,187.70 and 123,279.84 is: 185,203.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,594.16 : 193,187.70 = 123,279.84 : x
  2. Step 2: Convert to fraction form
    128,594.16/193,187.70 = 123,279.84/x
  3. Step 3: Cross multiply
    128,594.16x = 193,187.70 × 123,279.84
  4. Step 4: Simplify right side
    128,594.16x = 23,816,148,745.97
  5. Step 5: Solve for x
    x = 23,816,148,745.97/128,594.16
  6. Step 6: Final answer
    x = 185,203.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.