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Finding the Fourth Proportional to 427,605.81, 590,108.27 and 236,636.97

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Solution

The fourth proportional to 427,605.81, 590,108.27 and 236,636.97 is: 326,565.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,605.81 : 590,108.27 = 236,636.97 : x
  2. Step 2: Convert to fraction form
    427,605.81/590,108.27 = 236,636.97/x
  3. Step 3: Cross multiply
    427,605.81x = 590,108.27 × 236,636.97
  4. Step 4: Simplify right side
    427,605.81x = 139,641,431,801.56
  5. Step 5: Solve for x
    x = 139,641,431,801.56/427,605.81
  6. Step 6: Final answer
    x = 326,565.80

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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.