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Finding the Fourth Proportional to 22,459.88, 33,689.82 and 7,661.18

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Solution

The fourth proportional to 22,459.88, 33,689.82 and 7,661.18 is: 11,491.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,459.88 : 33,689.82 = 7,661.18 : x
  2. Step 2: Convert to fraction form
    22,459.88/33,689.82 = 7,661.18/x
  3. Step 3: Cross multiply
    22,459.88x = 33,689.82 × 7,661.18
  4. Step 4: Simplify right side
    22,459.88x = 258,103,775.19
  5. Step 5: Solve for x
    x = 258,103,775.19/22,459.88
  6. Step 6: Final answer
    x = 11,491.77

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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.