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Finding the Fourth Proportional to 3,592.86, 5,389.29 and 1,127.87

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Solution

The fourth proportional to 3,592.86, 5,389.29 and 1,127.87 is: 1,691.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,592.86 : 5,389.29 = 1,127.87 : x
  2. Step 2: Convert to fraction form
    3,592.86/5,389.29 = 1,127.87/x
  3. Step 3: Cross multiply
    3,592.86x = 5,389.29 × 1,127.87
  4. Step 4: Simplify right side
    3,592.86x = 6,078,418.51
  5. Step 5: Solve for x
    x = 6,078,418.51/3,592.86
  6. Step 6: Final answer
    x = 1,691.81

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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.