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Finding the Fourth Proportional to 13,297.48, 18,349.86 and 7,328.08

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Solution

The fourth proportional to 13,297.48, 18,349.86 and 7,328.08 is: 10,112.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,297.48 : 18,349.86 = 7,328.08 : x
  2. Step 2: Convert to fraction form
    13,297.48/18,349.86 = 7,328.08/x
  3. Step 3: Cross multiply
    13,297.48x = 18,349.86 × 7,328.08
  4. Step 4: Simplify right side
    13,297.48x = 134,469,242.07
  5. Step 5: Solve for x
    x = 134,469,242.07/13,297.48
  6. Step 6: Final answer
    x = 10,112.39

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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.