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Finding the Fourth Proportional to 10,573.30, 15,867.21 and 10,491.28

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Solution

The fourth proportional to 10,573.30, 15,867.21 and 10,491.28 is: 15,744.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,573.30 : 15,867.21 = 10,491.28 : x
  2. Step 2: Convert to fraction form
    10,573.30/15,867.21 = 10,491.28/x
  3. Step 3: Cross multiply
    10,573.30x = 15,867.21 × 10,491.28
  4. Step 4: Simplify right side
    10,573.30x = 166,467,342.93
  5. Step 5: Solve for x
    x = 166,467,342.93/10,573.30
  6. Step 6: Final answer
    x = 15,744.12

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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.