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Finding the Fourth Proportional to 127,305.70, 190,957.33 and 77,399.57

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Solution

The fourth proportional to 127,305.70, 190,957.33 and 77,399.57 is: 116,098.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,305.70 : 190,957.33 = 77,399.57 : x
  2. Step 2: Convert to fraction form
    127,305.70/190,957.33 = 77,399.57/x
  3. Step 3: Cross multiply
    127,305.70x = 190,957.33 × 77,399.57
  4. Step 4: Simplify right side
    127,305.70x = 14,780,015,804.49
  5. Step 5: Solve for x
    x = 14,780,015,804.49/127,305.70
  6. Step 6: Final answer
    x = 116,098.62

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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.