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Finding the Fourth Proportional to 22,605.80, 33,929.72 and 11,520.81

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Solution

The fourth proportional to 22,605.80, 33,929.72 and 11,520.81 is: 17,291.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,605.80 : 33,929.72 = 11,520.81 : x
  2. Step 2: Convert to fraction form
    22,605.80/33,929.72 = 11,520.81/x
  3. Step 3: Cross multiply
    22,605.80x = 33,929.72 × 11,520.81
  4. Step 4: Simplify right side
    22,605.80x = 390,897,799.87
  5. Step 5: Solve for x
    x = 390,897,799.87/22,605.80
  6. Step 6: Final answer
    x = 17,291.93

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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.