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Finding the Fourth Proportional to 116,355.99, 160,571.91 and 65,370.87

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Solution

The fourth proportional to 116,355.99, 160,571.91 and 65,370.87 is: 90,212.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,355.99 : 160,571.91 = 65,370.87 : x
  2. Step 2: Convert to fraction form
    116,355.99/160,571.91 = 65,370.87/x
  3. Step 3: Cross multiply
    116,355.99x = 160,571.91 × 65,370.87
  4. Step 4: Simplify right side
    116,355.99x = 10,496,725,454.26
  5. Step 5: Solve for x
    x = 10,496,725,454.26/116,355.99
  6. Step 6: Final answer
    x = 90,212.16

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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.