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Finding the Fourth Proportional to 14,575.20, 21,869.72 and 7,553.91

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Solution

The fourth proportional to 14,575.20, 21,869.72 and 7,553.91 is: 11,334.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,575.20 : 21,869.72 = 7,553.91 : x
  2. Step 2: Convert to fraction form
    14,575.20/21,869.72 = 7,553.91/x
  3. Step 3: Cross multiply
    14,575.20x = 21,869.72 × 7,553.91
  4. Step 4: Simplify right side
    14,575.20x = 165,201,749.49
  5. Step 5: Solve for x
    x = 165,201,749.49/14,575.20
  6. Step 6: Final answer
    x = 11,334.45

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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.