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Finding the Fourth Proportional to 12,704.11, 17,530.97 and 7,038.41

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Solution

The fourth proportional to 12,704.11, 17,530.97 and 7,038.41 is: 9,712.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,704.11 : 17,530.97 = 7,038.41 : x
  2. Step 2: Convert to fraction form
    12,704.11/17,530.97 = 7,038.41/x
  3. Step 3: Cross multiply
    12,704.11x = 17,530.97 × 7,038.41
  4. Step 4: Simplify right side
    12,704.11x = 123,390,154.56
  5. Step 5: Solve for x
    x = 123,390,154.56/12,704.11
  6. Step 6: Final answer
    x = 9,712.62

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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.