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Finding the Fourth Proportional to 14,913.99, 22,359.69 and 12,858.21

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Solution

The fourth proportional to 14,913.99, 22,359.69 and 12,858.21 is: 19,277.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,913.99 : 22,359.69 = 12,858.21 : x
  2. Step 2: Convert to fraction form
    14,913.99/22,359.69 = 12,858.21/x
  3. Step 3: Cross multiply
    14,913.99x = 22,359.69 × 12,858.21
  4. Step 4: Simplify right side
    14,913.99x = 287,505,589.55
  5. Step 5: Solve for x
    x = 287,505,589.55/14,913.99
  6. Step 6: Final answer
    x = 19,277.58

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1.5x scale

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.