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Finding the Fourth Proportional to 95,140.20, 142,621.20 and 36,015.60

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Solution

The fourth proportional to 95,140.20, 142,621.20 and 36,015.60 is: 53,989.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    95,140.20 : 142,621.20 = 36,015.60 : x
  2. Step 2: Convert to fraction form
    95,140.20/142,621.20 = 36,015.60/x
  3. Step 3: Cross multiply
    95,140.20x = 142,621.20 × 36,015.60
  4. Step 4: Simplify right side
    95,140.20x = 5,136,588,090.72
  5. Step 5: Solve for x
    x = 5,136,588,090.72/95,140.20
  6. Step 6: Final answer
    x = 53,989.67

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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.