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Finding the Fourth Proportional to 22,270.56, 33,406.65 and 7,479.96

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Solution

The fourth proportional to 22,270.56, 33,406.65 and 7,479.96 is: 11,220.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,270.56 : 33,406.65 = 7,479.96 : x
  2. Step 2: Convert to fraction form
    22,270.56/33,406.65 = 7,479.96/x
  3. Step 3: Cross multiply
    22,270.56x = 33,406.65 × 7,479.96
  4. Step 4: Simplify right side
    22,270.56x = 249,880,405.73
  5. Step 5: Solve for x
    x = 249,880,405.73/22,270.56
  6. Step 6: Final answer
    x = 11,220.21

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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.