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Finding the Fourth Proportional to 12,349.52, 17,043.96 and 7,043.12

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Solution

The fourth proportional to 12,349.52, 17,043.96 and 7,043.12 is: 9,720.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,349.52 : 17,043.96 = 7,043.12 : x
  2. Step 2: Convert to fraction form
    12,349.52/17,043.96 = 7,043.12/x
  3. Step 3: Cross multiply
    12,349.52x = 17,043.96 × 7,043.12
  4. Step 4: Simplify right side
    12,349.52x = 120,042,655.56
  5. Step 5: Solve for x
    x = 120,042,655.56/12,349.52
  6. Step 6: Final answer
    x = 9,720.43

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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.