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Finding the Fourth Proportional to 76,680.18, 105,811.11 and 44,842.86

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Solution

The fourth proportional to 76,680.18, 105,811.11 and 44,842.86 is: 61,878.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,680.18 : 105,811.11 = 44,842.86 : x
  2. Step 2: Convert to fraction form
    76,680.18/105,811.11 = 44,842.86/x
  3. Step 3: Cross multiply
    76,680.18x = 105,811.11 × 44,842.86
  4. Step 4: Simplify right side
    76,680.18x = 4,744,872,792.17
  5. Step 5: Solve for x
    x = 4,744,872,792.17/76,680.18
  6. Step 6: Final answer
    x = 61,878.74

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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.