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Finding the Fourth Proportional to 34,355.88, 47,408.31 and 19,247.31

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Solution

The fourth proportional to 34,355.88, 47,408.31 and 19,247.31 is: 26,559.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,355.88 : 47,408.31 = 19,247.31 : x
  2. Step 2: Convert to fraction form
    34,355.88/47,408.31 = 19,247.31/x
  3. Step 3: Cross multiply
    34,355.88x = 47,408.31 × 19,247.31
  4. Step 4: Simplify right side
    34,355.88x = 912,482,439.15
  5. Step 5: Solve for x
    x = 912,482,439.15/34,355.88
  6. Step 6: Final answer
    x = 26,559.72

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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.