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Finding the Fourth Proportional to 308,468.27, 425,683.80 and 172,502.48

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Solution

The fourth proportional to 308,468.27, 425,683.80 and 172,502.48 is: 238,052.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,468.27 : 425,683.80 = 172,502.48 : x
  2. Step 2: Convert to fraction form
    308,468.27/425,683.80 = 172,502.48/x
  3. Step 3: Cross multiply
    308,468.27x = 425,683.80 × 172,502.48
  4. Step 4: Simplify right side
    308,468.27x = 73,431,509,067.41
  5. Step 5: Solve for x
    x = 73,431,509,067.41/308,468.27
  6. Step 6: Final answer
    x = 238,052.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.