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Finding the Fourth Proportional to 87,591.54, 120,878.73 and 53,599.41

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Solution

The fourth proportional to 87,591.54, 120,878.73 and 53,599.41 is: 73,968.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,591.54 : 120,878.73 = 53,599.41 : x
  2. Step 2: Convert to fraction form
    87,591.54/120,878.73 = 53,599.41/x
  3. Step 3: Cross multiply
    87,591.54x = 120,878.73 × 53,599.41
  4. Step 4: Simplify right side
    87,591.54x = 6,479,028,609.55
  5. Step 5: Solve for x
    x = 6,479,028,609.55/87,591.54
  6. Step 6: Final answer
    x = 73,968.66

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1.5x scale

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.