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Finding the Fourth Proportional to 19,921.26, 29,881.90 and 6,070.26

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Solution

The fourth proportional to 19,921.26, 29,881.90 and 6,070.26 is: 9,105.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,921.26 : 29,881.90 = 6,070.26 : x
  2. Step 2: Convert to fraction form
    19,921.26/29,881.90 = 6,070.26/x
  3. Step 3: Cross multiply
    19,921.26x = 29,881.90 × 6,070.26
  4. Step 4: Simplify right side
    19,921.26x = 181,390,902.29
  5. Step 5: Solve for x
    x = 181,390,902.29/19,921.26
  6. Step 6: Final answer
    x = 9,105.39

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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.