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Finding the Fourth Proportional to 73,986.42, 111,220.21 and 59,355.40

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Solution

The fourth proportional to 73,986.42, 111,220.21 and 59,355.40 is: 89,226.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,986.42 : 111,220.21 = 59,355.40 : x
  2. Step 2: Convert to fraction form
    73,986.42/111,220.21 = 59,355.40/x
  3. Step 3: Cross multiply
    73,986.42x = 111,220.21 × 59,355.40
  4. Step 4: Simplify right side
    73,986.42x = 6,601,520,052.63
  5. Step 5: Solve for x
    x = 6,601,520,052.63/73,986.42
  6. Step 6: Final answer
    x = 89,226.10

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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.