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Finding the Fourth Proportional to 9,879.18, 14,812.26 and 5,921.52

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Solution

The fourth proportional to 9,879.18, 14,812.26 and 5,921.52 is: 8,878.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,879.18 : 14,812.26 = 5,921.52 : x
  2. Step 2: Convert to fraction form
    9,879.18/14,812.26 = 5,921.52/x
  3. Step 3: Cross multiply
    9,879.18x = 14,812.26 × 5,921.52
  4. Step 4: Simplify right side
    9,879.18x = 87,711,093.84
  5. Step 5: Solve for x
    x = 87,711,093.84/9,879.18
  6. Step 6: Final answer
    x = 8,878.38

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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.