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Finding the Fourth Proportional to 115,572.16, 173,216.40 and 65,694

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Solution

The fourth proportional to 115,572.16, 173,216.40 and 65,694 is: 98,460.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,572.16 : 173,216.40 = 65,694 : x
  2. Step 2: Convert to fraction form
    115,572.16/173,216.40 = 65,694/x
  3. Step 3: Cross multiply
    115,572.16x = 173,216.40 × 65,694
  4. Step 4: Simplify right side
    115,572.16x = 11,379,278,181.60
  5. Step 5: Solve for x
    x = 11,379,278,181.60/115,572.16
  6. Step 6: Final answer
    x = 98,460.37

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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.