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Finding the Fourth Proportional to 278,015.70, 416,700.96 and 127,940.92

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Solution

The fourth proportional to 278,015.70, 416,700.96 and 127,940.92 is: 191,762.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,015.70 : 416,700.96 = 127,940.92 : x
  2. Step 2: Convert to fraction form
    278,015.70/416,700.96 = 127,940.92/x
  3. Step 3: Cross multiply
    278,015.70x = 416,700.96 × 127,940.92
  4. Step 4: Simplify right side
    278,015.70x = 53,313,104,187.28
  5. Step 5: Solve for x
    x = 53,313,104,187.28/278,015.70
  6. Step 6: Final answer
    x = 191,762.93

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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.