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Finding the Fourth Proportional to 78,068.54, 107,724.80 and 44,072.84

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Solution

The fourth proportional to 78,068.54, 107,724.80 and 44,072.84 is: 60,815.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,068.54 : 107,724.80 = 44,072.84 : x
  2. Step 2: Convert to fraction form
    78,068.54/107,724.80 = 44,072.84/x
  3. Step 3: Cross multiply
    78,068.54x = 107,724.80 × 44,072.84
  4. Step 4: Simplify right side
    78,068.54x = 4,747,738,253.93
  5. Step 5: Solve for x
    x = 4,747,738,253.93/78,068.54
  6. Step 6: Final answer
    x = 60,815.00

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Why These Related Problems?

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