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Finding the Fourth Proportional to 215,552.28, 323,328.48 and 65,793.39

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Solution

The fourth proportional to 215,552.28, 323,328.48 and 65,793.39 is: 98,690.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,552.28 : 323,328.48 = 65,793.39 : x
  2. Step 2: Convert to fraction form
    215,552.28/323,328.48 = 65,793.39/x
  3. Step 3: Cross multiply
    215,552.28x = 323,328.48 × 65,793.39
  4. Step 4: Simplify right side
    215,552.28x = 21,272,876,782.75
  5. Step 5: Solve for x
    x = 21,272,876,782.75/215,552.28
  6. Step 6: Final answer
    x = 98,690.10

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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.