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Finding the Fourth Proportional to 505,798.17, 697,993.20 and 276,350.51

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Solution

The fourth proportional to 505,798.17, 697,993.20 and 276,350.51 is: 381,359.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,798.17 : 697,993.20 = 276,350.51 : x
  2. Step 2: Convert to fraction form
    505,798.17/697,993.20 = 276,350.51/x
  3. Step 3: Cross multiply
    505,798.17x = 697,993.20 × 276,350.51
  4. Step 4: Simplify right side
    505,798.17x = 192,890,776,796.53
  5. Step 5: Solve for x
    x = 192,890,776,796.53/505,798.17
  6. Step 6: Final answer
    x = 381,359.18

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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.