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Finding the Fourth Proportional to 12,626.48, 17,428.20 and 7,322.48

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Solution

The fourth proportional to 12,626.48, 17,428.20 and 7,322.48 is: 10,107.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,626.48 : 17,428.20 = 7,322.48 : x
  2. Step 2: Convert to fraction form
    12,626.48/17,428.20 = 7,322.48/x
  3. Step 3: Cross multiply
    12,626.48x = 17,428.20 × 7,322.48
  4. Step 4: Simplify right side
    12,626.48x = 127,617,645.94
  5. Step 5: Solve for x
    x = 127,617,645.94/12,626.48
  6. Step 6: Final answer
    x = 10,107.14

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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.