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Finding the Fourth Proportional to 13,299.88, 18,353 and 7,331.22

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Solution

The fourth proportional to 13,299.88, 18,353 and 7,331.22 is: 10,116.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,299.88 : 18,353 = 7,331.22 : x
  2. Step 2: Convert to fraction form
    13,299.88/18,353 = 7,331.22/x
  3. Step 3: Cross multiply
    13,299.88x = 18,353 × 7,331.22
  4. Step 4: Simplify right side
    13,299.88x = 134,549,880.66
  5. Step 5: Solve for x
    x = 134,549,880.66/13,299.88
  6. Step 6: Final answer
    x = 10,116.62

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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.