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Finding the Fourth Proportional to 192,036.08, 288,201.14 and 86,928.86

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Solution

The fourth proportional to 192,036.08, 288,201.14 and 86,928.86 is: 130,459.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,036.08 : 288,201.14 = 86,928.86 : x
  2. Step 2: Convert to fraction form
    192,036.08/288,201.14 = 86,928.86/x
  3. Step 3: Cross multiply
    192,036.08x = 288,201.14 × 86,928.86
  4. Step 4: Simplify right side
    192,036.08x = 25,052,996,550.90
  5. Step 5: Solve for x
    x = 25,052,996,550.90/192,036.08
  6. Step 6: Final answer
    x = 130,459.84

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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.