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Finding the Fourth Proportional to 17,218.98, 25,828.14 and 4,738.98

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Solution

The fourth proportional to 17,218.98, 25,828.14 and 4,738.98 is: 7,108.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,218.98 : 25,828.14 = 4,738.98 : x
  2. Step 2: Convert to fraction form
    17,218.98/25,828.14 = 4,738.98/x
  3. Step 3: Cross multiply
    17,218.98x = 25,828.14 × 4,738.98
  4. Step 4: Simplify right side
    17,218.98x = 122,399,038.90
  5. Step 5: Solve for x
    x = 122,399,038.90/17,218.98
  6. Step 6: Final answer
    x = 7,108.38

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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.