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Finding the Fourth Proportional to 14,990.67, 22,490.87 and 7,200.09

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Solution

The fourth proportional to 14,990.67, 22,490.87 and 7,200.09 is: 10,802.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,990.67 : 22,490.87 = 7,200.09 : x
  2. Step 2: Convert to fraction form
    14,990.67/22,490.87 = 7,200.09/x
  3. Step 3: Cross multiply
    14,990.67x = 22,490.87 × 7,200.09
  4. Step 4: Simplify right side
    14,990.67x = 161,936,252.18
  5. Step 5: Solve for x
    x = 161,936,252.18/14,990.67
  6. Step 6: Final answer
    x = 10,802.47

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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.