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Finding the Fourth Proportional to 60,105, 90,157.50 and 16,329

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Solution

The fourth proportional to 60,105, 90,157.50 and 16,329 is: 24,493.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,105 : 90,157.50 = 16,329 : x
  2. Step 2: Convert to fraction form
    60,105/90,157.50 = 16,329/x
  3. Step 3: Cross multiply
    60,105x = 90,157.50 × 16,329
  4. Step 4: Simplify right side
    60,105x = 1,472,181,817.50
  5. Step 5: Solve for x
    x = 1,472,181,817.50/60,105
  6. Step 6: Final answer
    x = 24,493.50

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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.