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Finding the Fourth Proportional to 57,398.27, 86,136.59 and 19,957.97

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Solution

The fourth proportional to 57,398.27, 86,136.59 and 19,957.97 is: 29,950.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,398.27 : 86,136.59 = 19,957.97 : x
  2. Step 2: Convert to fraction form
    57,398.27/86,136.59 = 19,957.97/x
  3. Step 3: Cross multiply
    57,398.27x = 86,136.59 × 19,957.97
  4. Step 4: Simplify right side
    57,398.27x = 1,719,111,445.97
  5. Step 5: Solve for x
    x = 1,719,111,445.97/57,398.27
  6. Step 6: Final answer
    x = 29,950.58

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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.