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Finding the Fourth Proportional to 13,762.50, 18,996.57 and 8,794.50

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Solution

The fourth proportional to 13,762.50, 18,996.57 and 8,794.50 is: 12,139.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,762.50 : 18,996.57 = 8,794.50 : x
  2. Step 2: Convert to fraction form
    13,762.50/18,996.57 = 8,794.50/x
  3. Step 3: Cross multiply
    13,762.50x = 18,996.57 × 8,794.50
  4. Step 4: Simplify right side
    13,762.50x = 167,065,334.87
  5. Step 5: Solve for x
    x = 167,065,334.87/13,762.50
  6. Step 6: Final answer
    x = 12,139.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.