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Finding the Fourth Proportional to 19,893.10, 29,839.65 and 9,356.57

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Solution

The fourth proportional to 19,893.10, 29,839.65 and 9,356.57 is: 14,034.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,893.10 : 29,839.65 = 9,356.57 : x
  2. Step 2: Convert to fraction form
    19,893.10/29,839.65 = 9,356.57/x
  3. Step 3: Cross multiply
    19,893.10x = 29,839.65 × 9,356.57
  4. Step 4: Simplify right side
    19,893.10x = 279,196,774.00
  5. Step 5: Solve for x
    x = 279,196,774.00/19,893.10
  6. Step 6: Final answer
    x = 14,034.86

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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.