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Finding the Fourth Proportional to 28,936.52, 43,406.04 and 14,157.88

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Solution

The fourth proportional to 28,936.52, 43,406.04 and 14,157.88 is: 21,237.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,936.52 : 43,406.04 = 14,157.88 : x
  2. Step 2: Convert to fraction form
    28,936.52/43,406.04 = 14,157.88/x
  3. Step 3: Cross multiply
    28,936.52x = 43,406.04 × 14,157.88
  4. Step 4: Simplify right side
    28,936.52x = 614,537,505.60
  5. Step 5: Solve for x
    x = 614,537,505.60/28,936.52
  6. Step 6: Final answer
    x = 21,237.44

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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.