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Finding the Fourth Proportional to 78,382.86, 108,169.14 and 42,573.58

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Solution

The fourth proportional to 78,382.86, 108,169.14 and 42,573.58 is: 58,751.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,382.86 : 108,169.14 = 42,573.58 : x
  2. Step 2: Convert to fraction form
    78,382.86/108,169.14 = 42,573.58/x
  3. Step 3: Cross multiply
    78,382.86x = 108,169.14 × 42,573.58
  4. Step 4: Simplify right side
    78,382.86x = 4,605,147,535.32
  5. Step 5: Solve for x
    x = 4,605,147,535.32/78,382.86
  6. Step 6: Final answer
    x = 58,751.97

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.