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Finding the Fourth Proportional to 18,267.50, 27,401.34 and 4,416.50

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Solution

The fourth proportional to 18,267.50, 27,401.34 and 4,416.50 is: 6,624.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,267.50 : 27,401.34 = 4,416.50 : x
  2. Step 2: Convert to fraction form
    18,267.50/27,401.34 = 4,416.50/x
  3. Step 3: Cross multiply
    18,267.50x = 27,401.34 × 4,416.50
  4. Step 4: Simplify right side
    18,267.50x = 121,018,018.11
  5. Step 5: Solve for x
    x = 121,018,018.11/18,267.50
  6. Step 6: Final answer
    x = 6,624.77

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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.