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Finding the Fourth Proportional to 7,896.50, 11,781.03 and 7,609.36

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Solution

The fourth proportional to 7,896.50, 11,781.03 and 7,609.36 is: 11,352.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,896.50 : 11,781.03 = 7,609.36 : x
  2. Step 2: Convert to fraction form
    7,896.50/11,781.03 = 7,609.36/x
  3. Step 3: Cross multiply
    7,896.50x = 11,781.03 × 7,609.36
  4. Step 4: Simplify right side
    7,896.50x = 89,646,068.99
  5. Step 5: Solve for x
    x = 89,646,068.99/7,896.50
  6. Step 6: Final answer
    x = 11,352.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.