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Finding the Fourth Proportional to 65,887.86, 98,841.42 and 19,134.66

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Solution

The fourth proportional to 65,887.86, 98,841.42 and 19,134.66 is: 28,704.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,887.86 : 98,841.42 = 19,134.66 : x
  2. Step 2: Convert to fraction form
    65,887.86/98,841.42 = 19,134.66/x
  3. Step 3: Cross multiply
    65,887.86x = 98,841.42 × 19,134.66
  4. Step 4: Simplify right side
    65,887.86x = 1,891,296,965.62
  5. Step 5: Solve for x
    x = 1,891,296,965.62/65,887.86
  6. Step 6: Final answer
    x = 28,704.79

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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.