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Finding the Fourth Proportional to 14,619.61, 20,174.74 and 8,246.22

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Solution

The fourth proportional to 14,619.61, 20,174.74 and 8,246.22 is: 11,379.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,619.61 : 20,174.74 = 8,246.22 : x
  2. Step 2: Convert to fraction form
    14,619.61/20,174.74 = 8,246.22/x
  3. Step 3: Cross multiply
    14,619.61x = 20,174.74 × 8,246.22
  4. Step 4: Simplify right side
    14,619.61x = 166,365,344.48
  5. Step 5: Solve for x
    x = 166,365,344.48/14,619.61
  6. Step 6: Final answer
    x = 11,379.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.