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Finding the Fourth Proportional to 13,246.69, 18,279.99 and 7,277.98

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Solution

The fourth proportional to 13,246.69, 18,279.99 and 7,277.98 is: 10,043.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,246.69 : 18,279.99 = 7,277.98 : x
  2. Step 2: Convert to fraction form
    13,246.69/18,279.99 = 7,277.98/x
  3. Step 3: Cross multiply
    13,246.69x = 18,279.99 × 7,277.98
  4. Step 4: Simplify right side
    13,246.69x = 133,041,401.62
  5. Step 5: Solve for x
    x = 133,041,401.62/13,246.69
  6. Step 6: Final answer
    x = 10,043.37

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1.5x scale

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.