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Finding the Fourth Proportional to 127,190.99, 190,790.54 and 63,976.59

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Solution

The fourth proportional to 127,190.99, 190,790.54 and 63,976.59 is: 95,966.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,190.99 : 190,790.54 = 63,976.59 : x
  2. Step 2: Convert to fraction form
    127,190.99/190,790.54 = 63,976.59/x
  3. Step 3: Cross multiply
    127,190.99x = 190,790.54 × 63,976.59
  4. Step 4: Simplify right side
    127,190.99x = 12,206,128,153.46
  5. Step 5: Solve for x
    x = 12,206,128,153.46/127,190.99
  6. Step 6: Final answer
    x = 95,966.92

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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.