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Finding the Fourth Proportional to 77,800.78, 107,365.72 and 44,268.94

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Solution

The fourth proportional to 77,800.78, 107,365.72 and 44,268.94 is: 61,091.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,800.78 : 107,365.72 = 44,268.94 : x
  2. Step 2: Convert to fraction form
    77,800.78/107,365.72 = 44,268.94/x
  3. Step 3: Cross multiply
    77,800.78x = 107,365.72 × 44,268.94
  4. Step 4: Simplify right side
    77,800.78x = 4,752,966,616.74
  5. Step 5: Solve for x
    x = 4,752,966,616.74/77,800.78
  6. Step 6: Final answer
    x = 61,091.50

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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.