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Finding the Fourth Proportional to 23,259.99, 32,099.09 and 13,188.21

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Solution

The fourth proportional to 23,259.99, 32,099.09 and 13,188.21 is: 18,199.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,259.99 : 32,099.09 = 13,188.21 : x
  2. Step 2: Convert to fraction form
    23,259.99/32,099.09 = 13,188.21/x
  3. Step 3: Cross multiply
    23,259.99x = 32,099.09 × 13,188.21
  4. Step 4: Simplify right side
    23,259.99x = 423,329,539.73
  5. Step 5: Solve for x
    x = 423,329,539.73/23,259.99
  6. Step 6: Final answer
    x = 18,199.90

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Double scale
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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.