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Finding the Fourth Proportional to 115,800.54, 173,722.72 and 39,878.88

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Solution

The fourth proportional to 115,800.54, 173,722.72 and 39,878.88 is: 59,825.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,800.54 : 173,722.72 = 39,878.88 : x
  2. Step 2: Convert to fraction form
    115,800.54/173,722.72 = 39,878.88/x
  3. Step 3: Cross multiply
    115,800.54x = 173,722.72 × 39,878.88
  4. Step 4: Simplify right side
    115,800.54x = 6,927,867,504.15
  5. Step 5: Solve for x
    x = 6,927,867,504.15/115,800.54
  6. Step 6: Final answer
    x = 59,825.87

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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.