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Finding the Fourth Proportional to 67,929.54, 101,879.72 and 42,616.86

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Solution

The fourth proportional to 67,929.54, 101,879.72 and 42,616.86 is: 63,916.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,929.54 : 101,879.72 = 42,616.86 : x
  2. Step 2: Convert to fraction form
    67,929.54/101,879.72 = 42,616.86/x
  3. Step 3: Cross multiply
    67,929.54x = 101,879.72 × 42,616.86
  4. Step 4: Simplify right side
    67,929.54x = 4,341,793,764.08
  5. Step 5: Solve for x
    x = 4,341,793,764.08/67,929.54
  6. Step 6: Final answer
    x = 63,916.14

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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.