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Finding the Fourth Proportional to 14,553.88, 21,828.69 and 7,156.35

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Solution

The fourth proportional to 14,553.88, 21,828.69 and 7,156.35 is: 10,733.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,553.88 : 21,828.69 = 7,156.35 : x
  2. Step 2: Convert to fraction form
    14,553.88/21,828.69 = 7,156.35/x
  3. Step 3: Cross multiply
    14,553.88x = 21,828.69 × 7,156.35
  4. Step 4: Simplify right side
    14,553.88x = 156,213,745.68
  5. Step 5: Solve for x
    x = 156,213,745.68/14,553.88
  6. Step 6: Final answer
    x = 10,733.48

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1.5x scale

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.