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Finding the Fourth Proportional to 108,015.99, 161,976.74 and 57,404.01

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Solution

The fourth proportional to 108,015.99, 161,976.74 and 57,404.01 is: 86,080.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,015.99 : 161,976.74 = 57,404.01 : x
  2. Step 2: Convert to fraction form
    108,015.99/161,976.74 = 57,404.01/x
  3. Step 3: Cross multiply
    108,015.99x = 161,976.74 × 57,404.01
  4. Step 4: Simplify right side
    108,015.99x = 9,298,114,115.71
  5. Step 5: Solve for x
    x = 9,298,114,115.71/108,015.99
  6. Step 6: Final answer
    x = 86,080.90

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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.