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Finding the Fourth Proportional to 72,584.48, 108,883.60 and 28,214.66

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Solution

The fourth proportional to 72,584.48, 108,883.60 and 28,214.66 is: 42,324.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,584.48 : 108,883.60 = 28,214.66 : x
  2. Step 2: Convert to fraction form
    72,584.48/108,883.60 = 28,214.66/x
  3. Step 3: Cross multiply
    72,584.48x = 108,883.60 × 28,214.66
  4. Step 4: Simplify right side
    72,584.48x = 3,072,113,753.58
  5. Step 5: Solve for x
    x = 3,072,113,753.58/72,584.48
  6. Step 6: Final answer
    x = 42,324.66

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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.