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Finding the Fourth Proportional to 16,140.87, 24,211.89 and 4,455

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Solution

The fourth proportional to 16,140.87, 24,211.89 and 4,455 is: 6,682.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,140.87 : 24,211.89 = 4,455 : x
  2. Step 2: Convert to fraction form
    16,140.87/24,211.89 = 4,455/x
  3. Step 3: Cross multiply
    16,140.87x = 24,211.89 × 4,455
  4. Step 4: Simplify right side
    16,140.87x = 107,863,969.95
  5. Step 5: Solve for x
    x = 107,863,969.95/16,140.87
  6. Step 6: Final answer
    x = 6,682.66

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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.