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Finding the Fourth Proportional to 95,399.96, 143,140.62 and 47,990.12

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Solution

The fourth proportional to 95,399.96, 143,140.62 and 47,990.12 is: 72,005.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    95,399.96 : 143,140.62 = 47,990.12 : x
  2. Step 2: Convert to fraction form
    95,399.96/143,140.62 = 47,990.12/x
  3. Step 3: Cross multiply
    95,399.96x = 143,140.62 × 47,990.12
  4. Step 4: Simplify right side
    95,399.96x = 6,869,335,530.67
  5. Step 5: Solve for x
    x = 6,869,335,530.67/95,399.96
  6. Step 6: Final answer
    x = 72,005.64

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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.