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Finding the Fourth Proportional to 78,315.84, 108,081.20 and 44,324.36

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Solution

The fourth proportional to 78,315.84, 108,081.20 and 44,324.36 is: 61,170.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,315.84 : 108,081.20 = 44,324.36 : x
  2. Step 2: Convert to fraction form
    78,315.84/108,081.20 = 44,324.36/x
  3. Step 3: Cross multiply
    78,315.84x = 108,081.20 × 44,324.36
  4. Step 4: Simplify right side
    78,315.84x = 4,790,630,018.03
  5. Step 5: Solve for x
    x = 4,790,630,018.03/78,315.84
  6. Step 6: Final answer
    x = 61,170.64

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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.