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Finding the Fourth Proportional to 505,896.72, 698,132.52 and 279,537.36

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Solution

The fourth proportional to 505,896.72, 698,132.52 and 279,537.36 is: 385,758.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,896.72 : 698,132.52 = 279,537.36 : x
  2. Step 2: Convert to fraction form
    505,896.72/698,132.52 = 279,537.36/x
  3. Step 3: Cross multiply
    505,896.72x = 698,132.52 × 279,537.36
  4. Step 4: Simplify right side
    505,896.72x = 195,154,121,570.95
  5. Step 5: Solve for x
    x = 195,154,121,570.95/505,896.72
  6. Step 6: Final answer
    x = 385,758.82

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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.