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Finding the Fourth Proportional to 61,978.86, 92,945.79 and 33,919.65

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Solution

The fourth proportional to 61,978.86, 92,945.79 and 33,919.65 is: 50,867.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,978.86 : 92,945.79 = 33,919.65 : x
  2. Step 2: Convert to fraction form
    61,978.86/92,945.79 = 33,919.65/x
  3. Step 3: Cross multiply
    61,978.86x = 92,945.79 × 33,919.65
  4. Step 4: Simplify right side
    61,978.86x = 3,152,688,665.77
  5. Step 5: Solve for x
    x = 3,152,688,665.77/61,978.86
  6. Step 6: Final answer
    x = 50,867.16

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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.