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Finding the Fourth Proportional to 17,588.84, 26,390.16 and 7,721.24

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Solution

The fourth proportional to 17,588.84, 26,390.16 and 7,721.24 is: 11,584.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,588.84 : 26,390.16 = 7,721.24 : x
  2. Step 2: Convert to fraction form
    17,588.84/26,390.16 = 7,721.24/x
  3. Step 3: Cross multiply
    17,588.84x = 26,390.16 × 7,721.24
  4. Step 4: Simplify right side
    17,588.84x = 203,764,759.00
  5. Step 5: Solve for x
    x = 203,764,759.00/17,588.84
  6. Step 6: Final answer
    x = 11,584.89

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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.