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Finding the Fourth Proportional to 28,866.87, 39,833.64 and 16,928.01

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Solution

The fourth proportional to 28,866.87, 39,833.64 and 16,928.01 is: 23,359.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,866.87 : 39,833.64 = 16,928.01 : x
  2. Step 2: Convert to fraction form
    28,866.87/39,833.64 = 16,928.01/x
  3. Step 3: Cross multiply
    28,866.87x = 39,833.64 × 16,928.01
  4. Step 4: Simplify right side
    28,866.87x = 674,304,256.26
  5. Step 5: Solve for x
    x = 674,304,256.26/28,866.87
  6. Step 6: Final answer
    x = 23,359.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.