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Finding the Fourth Proportional to 77,787.30, 107,346.87 and 44,253.30

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Solution

The fourth proportional to 77,787.30, 107,346.87 and 44,253.30 is: 61,069.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,787.30 : 107,346.87 = 44,253.30 : x
  2. Step 2: Convert to fraction form
    77,787.30/107,346.87 = 44,253.30/x
  3. Step 3: Cross multiply
    77,787.30x = 107,346.87 × 44,253.30
  4. Step 4: Simplify right side
    77,787.30x = 4,750,453,242.17
  5. Step 5: Solve for x
    x = 4,750,453,242.17/77,787.30
  6. Step 6: Final answer
    x = 61,069.78

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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.