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Finding the Fourth Proportional to 19,243.24, 28,865.98 and 5,393.32

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Solution

The fourth proportional to 19,243.24, 28,865.98 and 5,393.32 is: 8,090.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,243.24 : 28,865.98 = 5,393.32 : x
  2. Step 2: Convert to fraction form
    19,243.24/28,865.98 = 5,393.32/x
  3. Step 3: Cross multiply
    19,243.24x = 28,865.98 × 5,393.32
  4. Step 4: Simplify right side
    19,243.24x = 155,683,467.25
  5. Step 5: Solve for x
    x = 155,683,467.25/19,243.24
  6. Step 6: Final answer
    x = 8,090.29

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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.