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Finding the Fourth Proportional to 39,594.76, 59,385.95 and 12,940.54

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Solution

The fourth proportional to 39,594.76, 59,385.95 and 12,940.54 is: 19,408.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,594.76 : 59,385.95 = 12,940.54 : x
  2. Step 2: Convert to fraction form
    39,594.76/59,385.95 = 12,940.54/x
  3. Step 3: Cross multiply
    39,594.76x = 59,385.95 × 12,940.54
  4. Step 4: Simplify right side
    39,594.76x = 768,486,261.41
  5. Step 5: Solve for x
    x = 768,486,261.41/39,594.76
  6. Step 6: Final answer
    x = 19,408.79

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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.