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Finding the Fourth Proportional to 127,640.72, 192,416.72 and 119,077.40

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Solution

The fourth proportional to 127,640.72, 192,416.72 and 119,077.40 is: 179,507.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,640.72 : 192,416.72 = 119,077.40 : x
  2. Step 2: Convert to fraction form
    127,640.72/192,416.72 = 119,077.40/x
  3. Step 3: Cross multiply
    127,640.72x = 192,416.72 × 119,077.40
  4. Step 4: Simplify right side
    127,640.72x = 22,912,482,734.13
  5. Step 5: Solve for x
    x = 22,912,482,734.13/127,640.72
  6. Step 6: Final answer
    x = 179,507.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.