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Finding the Fourth Proportional to 505,798.95, 697,994.38 and 276,351.30

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Solution

The fourth proportional to 505,798.95, 697,994.38 and 276,351.30 is: 381,360.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,798.95 : 697,994.38 = 276,351.30 : x
  2. Step 2: Convert to fraction form
    505,798.95/697,994.38 = 276,351.30/x
  3. Step 3: Cross multiply
    505,798.95x = 697,994.38 × 276,351.30
  4. Step 4: Simplify right side
    505,798.95x = 192,891,654,305.69
  5. Step 5: Solve for x
    x = 192,891,654,305.69/505,798.95
  6. Step 6: Final answer
    x = 381,360.33

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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.