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Finding the Fourth Proportional to 13,671.99, 18,867.74 and 8,010.50

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Solution

The fourth proportional to 13,671.99, 18,867.74 and 8,010.50 is: 11,054.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,671.99 : 18,867.74 = 8,010.50 : x
  2. Step 2: Convert to fraction form
    13,671.99/18,867.74 = 8,010.50/x
  3. Step 3: Cross multiply
    13,671.99x = 18,867.74 × 8,010.50
  4. Step 4: Simplify right side
    13,671.99x = 151,139,896.88
  5. Step 5: Solve for x
    x = 151,139,896.88/13,671.99
  6. Step 6: Final answer
    x = 11,054.71

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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.