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Finding the Fourth Proportional to 78,758.76, 108,707.76 and 44,787.09

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Solution

The fourth proportional to 78,758.76, 108,707.76 and 44,787.09 is: 61,817.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,758.76 : 108,707.76 = 44,787.09 : x
  2. Step 2: Convert to fraction form
    78,758.76/108,707.76 = 44,787.09/x
  3. Step 3: Cross multiply
    78,758.76x = 108,707.76 × 44,787.09
  4. Step 4: Simplify right side
    78,758.76x = 4,868,704,230.82
  5. Step 5: Solve for x
    x = 4,868,704,230.82/78,758.76
  6. Step 6: Final answer
    x = 61,817.94

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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.