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Finding the Fourth Proportional to 73,066.64, 109,489.88 and 56,401.36

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Solution

The fourth proportional to 73,066.64, 109,489.88 and 56,401.36 is: 84,517.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,066.64 : 109,489.88 = 56,401.36 : x
  2. Step 2: Convert to fraction form
    73,066.64/109,489.88 = 56,401.36/x
  3. Step 3: Cross multiply
    73,066.64x = 109,489.88 × 56,401.36
  4. Step 4: Simplify right side
    73,066.64x = 6,175,378,138.24
  5. Step 5: Solve for x
    x = 6,175,378,138.24/73,066.64
  6. Step 6: Final answer
    x = 84,517.07

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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.