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Finding the Fourth Proportional to 104,936.40, 157,404.60 and 57,697.20

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Solution

The fourth proportional to 104,936.40, 157,404.60 and 57,697.20 is: 86,545.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,936.40 : 157,404.60 = 57,697.20 : x
  2. Step 2: Convert to fraction form
    104,936.40/157,404.60 = 57,697.20/x
  3. Step 3: Cross multiply
    104,936.40x = 157,404.60 × 57,697.20
  4. Step 4: Simplify right side
    104,936.40x = 9,081,804,687.12
  5. Step 5: Solve for x
    x = 9,081,804,687.12/104,936.40
  6. Step 6: Final answer
    x = 86,545.80

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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.