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Finding the Fourth Proportional to 8,393.98, 12,591.79 and 3,058.61

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Solution

The fourth proportional to 8,393.98, 12,591.79 and 3,058.61 is: 4,588.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,393.98 : 12,591.79 = 3,058.61 : x
  2. Step 2: Convert to fraction form
    8,393.98/12,591.79 = 3,058.61/x
  3. Step 3: Cross multiply
    8,393.98x = 12,591.79 × 3,058.61
  4. Step 4: Simplify right side
    8,393.98x = 38,513,374.81
  5. Step 5: Solve for x
    x = 38,513,374.81/8,393.98
  6. Step 6: Final answer
    x = 4,588.21

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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.