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Finding the Fourth Proportional to 505,769.20, 698,009.74 and 276,361.36

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Solution

The fourth proportional to 505,769.20, 698,009.74 and 276,361.36 is: 381,405.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,769.20 : 698,009.74 = 276,361.36 : x
  2. Step 2: Convert to fraction form
    505,769.20/698,009.74 = 276,361.36/x
  3. Step 3: Cross multiply
    505,769.20x = 698,009.74 × 276,361.36
  4. Step 4: Simplify right side
    505,769.20x = 192,902,918,603.72
  5. Step 5: Solve for x
    x = 192,902,918,603.72/505,769.20
  6. Step 6: Final answer
    x = 381,405.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.