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Finding the Fourth Proportional to 71,878.73, 107,838.91 and 29,751.03

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Solution

The fourth proportional to 71,878.73, 107,838.91 and 29,751.03 is: 44,635.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,878.73 : 107,838.91 = 29,751.03 : x
  2. Step 2: Convert to fraction form
    71,878.73/107,838.91 = 29,751.03/x
  3. Step 3: Cross multiply
    71,878.73x = 107,838.91 × 29,751.03
  4. Step 4: Simplify right side
    71,878.73x = 3,208,318,683.77
  5. Step 5: Solve for x
    x = 3,208,318,683.77/71,878.73
  6. Step 6: Final answer
    x = 44,635.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.