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Finding the Fourth Proportional to 40,643.10, 60,964.65 and 36,236.70

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Solution

The fourth proportional to 40,643.10, 60,964.65 and 36,236.70 is: 54,355.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,643.10 : 60,964.65 = 36,236.70 : x
  2. Step 2: Convert to fraction form
    40,643.10/60,964.65 = 36,236.70/x
  3. Step 3: Cross multiply
    40,643.10x = 60,964.65 × 36,236.70
  4. Step 4: Simplify right side
    40,643.10x = 2,209,157,732.66
  5. Step 5: Solve for x
    x = 2,209,157,732.66/40,643.10
  6. Step 6: Final answer
    x = 54,355.05

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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.