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Finding the Fourth Proportional to 28,193.97, 42,291.99 and 9,474.64

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Solution

The fourth proportional to 28,193.97, 42,291.99 and 9,474.64 is: 14,212.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,193.97 : 42,291.99 = 9,474.64 : x
  2. Step 2: Convert to fraction form
    28,193.97/42,291.99 = 9,474.64/x
  3. Step 3: Cross multiply
    28,193.97x = 42,291.99 × 9,474.64
  4. Step 4: Simplify right side
    28,193.97x = 400,701,274.40
  5. Step 5: Solve for x
    x = 400,701,274.40/28,193.97
  6. Step 6: Final answer
    x = 14,212.30

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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.