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Finding the Fourth Proportional to 72,616.90, 108,956.37 and 35,204.62

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Solution

The fourth proportional to 72,616.90, 108,956.37 and 35,204.62 is: 52,821.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,616.90 : 108,956.37 = 35,204.62 : x
  2. Step 2: Convert to fraction form
    72,616.90/108,956.37 = 35,204.62/x
  3. Step 3: Cross multiply
    72,616.90x = 108,956.37 × 35,204.62
  4. Step 4: Simplify right side
    72,616.90x = 3,835,767,602.43
  5. Step 5: Solve for x
    x = 3,835,767,602.43/72,616.90
  6. Step 6: Final answer
    x = 52,821.97

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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.