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Finding the Fourth Proportional to 13,028.64, 17,979.44 and 7,060.28

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Solution

The fourth proportional to 13,028.64, 17,979.44 and 7,060.28 is: 9,743.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,028.64 : 17,979.44 = 7,060.28 : x
  2. Step 2: Convert to fraction form
    13,028.64/17,979.44 = 7,060.28/x
  3. Step 3: Cross multiply
    13,028.64x = 17,979.44 × 7,060.28
  4. Step 4: Simplify right side
    13,028.64x = 126,939,880.64
  5. Step 5: Solve for x
    x = 126,939,880.64/13,028.64
  6. Step 6: Final answer
    x = 9,743.14

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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.