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Finding the Fourth Proportional to 14,645.20, 21,912.92 and 8,700.32

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Solution

The fourth proportional to 14,645.20, 21,912.92 and 8,700.32 is: 13,017.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,645.20 : 21,912.92 = 8,700.32 : x
  2. Step 2: Convert to fraction form
    14,645.20/21,912.92 = 8,700.32/x
  3. Step 3: Cross multiply
    14,645.20x = 21,912.92 × 8,700.32
  4. Step 4: Simplify right side
    14,645.20x = 190,649,416.13
  5. Step 5: Solve for x
    x = 190,649,416.13/14,645.20
  6. Step 6: Final answer
    x = 13,017.88

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.