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Finding the Fourth Proportional to 1,372.86, 2,047.41 and 1,345.41

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Solution

The fourth proportional to 1,372.86, 2,047.41 and 1,345.41 is: 2,006.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,372.86 : 2,047.41 = 1,345.41 : x
  2. Step 2: Convert to fraction form
    1,372.86/2,047.41 = 1,345.41/x
  3. Step 3: Cross multiply
    1,372.86x = 2,047.41 × 1,345.41
  4. Step 4: Simplify right side
    1,372.86x = 2,754,605.89
  5. Step 5: Solve for x
    x = 2,754,605.89/1,372.86
  6. Step 6: Final answer
    x = 2,006.47

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.