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Finding the Fourth Proportional to 56,695.86, 85,044.60 and 19,759.86

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Solution

The fourth proportional to 56,695.86, 85,044.60 and 19,759.86 is: 29,640.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,695.86 : 85,044.60 = 19,759.86 : x
  2. Step 2: Convert to fraction form
    56,695.86/85,044.60 = 19,759.86/x
  3. Step 3: Cross multiply
    56,695.86x = 85,044.60 × 19,759.86
  4. Step 4: Simplify right side
    56,695.86x = 1,680,469,389.76
  5. Step 5: Solve for x
    x = 1,680,469,389.76/56,695.86
  6. Step 6: Final answer
    x = 29,640.07

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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.