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Finding the Fourth Proportional to 115,790.44, 159,773.70 and 65,488.36

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Solution

The fourth proportional to 115,790.44, 159,773.70 and 65,488.36 is: 90,364.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,790.44 : 159,773.70 = 65,488.36 : x
  2. Step 2: Convert to fraction form
    115,790.44/159,773.70 = 65,488.36/x
  3. Step 3: Cross multiply
    115,790.44x = 159,773.70 × 65,488.36
  4. Step 4: Simplify right side
    115,790.44x = 10,463,317,584.13
  5. Step 5: Solve for x
    x = 10,463,317,584.13/115,790.44
  6. Step 6: Final answer
    x = 90,364.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.