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Finding the Fourth Proportional to 328,008.52, 492,081.84 and 185,921.86

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Solution

The fourth proportional to 328,008.52, 492,081.84 and 185,921.86 is: 278,921.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,008.52 : 492,081.84 = 185,921.86 : x
  2. Step 2: Convert to fraction form
    328,008.52/492,081.84 = 185,921.86/x
  3. Step 3: Cross multiply
    328,008.52x = 492,081.84 × 185,921.86
  4. Step 4: Simplify right side
    328,008.52x = 91,488,770,965.02
  5. Step 5: Solve for x
    x = 91,488,770,965.02/328,008.52
  6. Step 6: Final answer
    x = 278,921.93

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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.