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Finding the Fourth Proportional to 28,532.97, 42,799.14 and 8,809.29

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Solution

The fourth proportional to 28,532.97, 42,799.14 and 8,809.29 is: 13,213.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,532.97 : 42,799.14 = 8,809.29 : x
  2. Step 2: Convert to fraction form
    28,532.97/42,799.14 = 8,809.29/x
  3. Step 3: Cross multiply
    28,532.97x = 42,799.14 × 8,809.29
  4. Step 4: Simplify right side
    28,532.97x = 377,030,036.01
  5. Step 5: Solve for x
    x = 377,030,036.01/28,532.97
  6. Step 6: Final answer
    x = 13,213.84

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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.