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Finding the Fourth Proportional to 19,878.03, 29,819.94 and 6,725.94

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Solution

The fourth proportional to 19,878.03, 29,819.94 and 6,725.94 is: 10,089.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,878.03 : 29,819.94 = 6,725.94 : x
  2. Step 2: Convert to fraction form
    19,878.03/29,819.94 = 6,725.94/x
  3. Step 3: Cross multiply
    19,878.03x = 29,819.94 × 6,725.94
  4. Step 4: Simplify right side
    19,878.03x = 200,567,127.24
  5. Step 5: Solve for x
    x = 200,567,127.24/19,878.03
  6. Step 6: Final answer
    x = 10,089.89

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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.