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Finding the Fourth Proportional to 127,305.93, 190,957.67 and 77,399.80

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Solution

The fourth proportional to 127,305.93, 190,957.67 and 77,399.80 is: 116,098.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,305.93 : 190,957.67 = 77,399.80 : x
  2. Step 2: Convert to fraction form
    127,305.93/190,957.67 = 77,399.80/x
  3. Step 3: Cross multiply
    127,305.93x = 190,957.67 × 77,399.80
  4. Step 4: Simplify right side
    127,305.93x = 14,780,086,401.83
  5. Step 5: Solve for x
    x = 14,780,086,401.83/127,305.93
  6. Step 6: Final answer
    x = 116,098.96

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1.5x scale

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.