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Finding the Fourth Proportional to 45,543.88, 68,317.87 and 13,951.64

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Solution

The fourth proportional to 45,543.88, 68,317.87 and 13,951.64 is: 20,928.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,543.88 : 68,317.87 = 13,951.64 : x
  2. Step 2: Convert to fraction form
    45,543.88/68,317.87 = 13,951.64/x
  3. Step 3: Cross multiply
    45,543.88x = 68,317.87 × 13,951.64
  4. Step 4: Simplify right side
    45,543.88x = 953,145,986.22
  5. Step 5: Solve for x
    x = 953,145,986.22/45,543.88
  6. Step 6: Final answer
    x = 20,928.08

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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.