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Finding the Fourth Proportional to 72,285.78, 108,493.47 and 60,513.24

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Solution

The fourth proportional to 72,285.78, 108,493.47 and 60,513.24 is: 90,824.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,285.78 : 108,493.47 = 60,513.24 : x
  2. Step 2: Convert to fraction form
    72,285.78/108,493.47 = 60,513.24/x
  3. Step 3: Cross multiply
    72,285.78x = 108,493.47 × 60,513.24
  4. Step 4: Simplify right side
    72,285.78x = 6,565,291,388.54
  5. Step 5: Solve for x
    x = 6,565,291,388.54/72,285.78
  6. Step 6: Final answer
    x = 90,824.11

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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.