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Finding the Fourth Proportional to 128,791.98, 193,167.24 and 35,275.86

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Solution

The fourth proportional to 128,791.98, 193,167.24 and 35,275.86 is: 52,908.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,791.98 : 193,167.24 = 35,275.86 : x
  2. Step 2: Convert to fraction form
    128,791.98/193,167.24 = 35,275.86/x
  3. Step 3: Cross multiply
    128,791.98x = 193,167.24 × 35,275.86
  4. Step 4: Simplify right side
    128,791.98x = 6,814,140,514.83
  5. Step 5: Solve for x
    x = 6,814,140,514.83/128,791.98
  6. Step 6: Final answer
    x = 52,908.11

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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.