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Finding the Fourth Proportional to 61,241.76, 91,855.20 and 16,872.96

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Solution

The fourth proportional to 61,241.76, 91,855.20 and 16,872.96 is: 25,307.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,241.76 : 91,855.20 = 16,872.96 : x
  2. Step 2: Convert to fraction form
    61,241.76/91,855.20 = 16,872.96/x
  3. Step 3: Cross multiply
    61,241.76x = 91,855.20 × 16,872.96
  4. Step 4: Simplify right side
    61,241.76x = 1,549,869,115.39
  5. Step 5: Solve for x
    x = 1,549,869,115.39/61,241.76
  6. Step 6: Final answer
    x = 25,307.39

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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.