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Finding the Fourth Proportional to 11,967.12, 17,939.16 and 7,573.68

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Solution

The fourth proportional to 11,967.12, 17,939.16 and 7,573.68 is: 11,353.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,967.12 : 17,939.16 = 7,573.68 : x
  2. Step 2: Convert to fraction form
    11,967.12/17,939.16 = 7,573.68/x
  3. Step 3: Cross multiply
    11,967.12x = 17,939.16 × 7,573.68
  4. Step 4: Simplify right side
    11,967.12x = 135,865,457.31
  5. Step 5: Solve for x
    x = 135,865,457.31/11,967.12
  6. Step 6: Final answer
    x = 11,353.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.