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Finding the Fourth Proportional to 3,372.97, 5,058.84 and 907.21

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Solution

The fourth proportional to 3,372.97, 5,058.84 and 907.21 is: 1,360.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,372.97 : 5,058.84 = 907.21 : x
  2. Step 2: Convert to fraction form
    3,372.97/5,058.84 = 907.21/x
  3. Step 3: Cross multiply
    3,372.97x = 5,058.84 × 907.21
  4. Step 4: Simplify right side
    3,372.97x = 4,589,430.24
  5. Step 5: Solve for x
    x = 4,589,430.24/3,372.97
  6. Step 6: Final answer
    x = 1,360.65

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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.