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Finding the Fourth Proportional to 53,243.72, 79,857.11 and 17,702.09

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Solution

The fourth proportional to 53,243.72, 79,857.11 and 17,702.09 is: 26,550.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,243.72 : 79,857.11 = 17,702.09 : x
  2. Step 2: Convert to fraction form
    53,243.72/79,857.11 = 17,702.09/x
  3. Step 3: Cross multiply
    53,243.72x = 79,857.11 × 17,702.09
  4. Step 4: Simplify right side
    53,243.72x = 1,413,637,748.36
  5. Step 5: Solve for x
    x = 1,413,637,748.36/53,243.72
  6. Step 6: Final answer
    x = 26,550.32

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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.