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Finding the Fourth Proportional to 78,783.96, 108,717.52 and 44,787.74

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Solution

The fourth proportional to 78,783.96, 108,717.52 and 44,787.74 is: 61,804.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,783.96 : 108,717.52 = 44,787.74 : x
  2. Step 2: Convert to fraction form
    78,783.96/108,717.52 = 44,787.74/x
  3. Step 3: Cross multiply
    78,783.96x = 108,717.52 × 44,787.74
  4. Step 4: Simplify right side
    78,783.96x = 4,869,212,019.20
  5. Step 5: Solve for x
    x = 4,869,212,019.20/78,783.96
  6. Step 6: Final answer
    x = 61,804.61

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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.