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Finding the Fourth Proportional to 19,603.88, 29,405.84 and 10,857.26

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Solution

The fourth proportional to 19,603.88, 29,405.84 and 10,857.26 is: 16,285.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,603.88 : 29,405.84 = 10,857.26 : x
  2. Step 2: Convert to fraction form
    19,603.88/29,405.84 = 10,857.26/x
  3. Step 3: Cross multiply
    19,603.88x = 29,405.84 × 10,857.26
  4. Step 4: Simplify right side
    19,603.88x = 319,266,850.40
  5. Step 5: Solve for x
    x = 319,266,850.40/19,603.88
  6. Step 6: Final answer
    x = 16,285.90

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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.