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Finding the Fourth Proportional to 11,356.99, 15,672.53 and 6,321.13

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Solution

The fourth proportional to 11,356.99, 15,672.53 and 6,321.13 is: 8,723.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,356.99 : 15,672.53 = 6,321.13 : x
  2. Step 2: Convert to fraction form
    11,356.99/15,672.53 = 6,321.13/x
  3. Step 3: Cross multiply
    11,356.99x = 15,672.53 × 6,321.13
  4. Step 4: Simplify right side
    11,356.99x = 99,068,102.48
  5. Step 5: Solve for x
    x = 99,068,102.48/11,356.99
  6. Step 6: Final answer
    x = 8,723.09

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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.