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Finding the Fourth Proportional to 505,790.75, 697,983.09 and 276,343.11

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Solution

The fourth proportional to 505,790.75, 697,983.09 and 276,343.11 is: 381,349.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,790.75 : 697,983.09 = 276,343.11 : x
  2. Step 2: Convert to fraction form
    505,790.75/697,983.09 = 276,343.11/x
  3. Step 3: Cross multiply
    505,790.75x = 697,983.09 × 276,343.11
  4. Step 4: Simplify right side
    505,790.75x = 192,882,817,818.01
  5. Step 5: Solve for x
    x = 192,882,817,818.01/505,790.75
  6. Step 6: Final answer
    x = 381,349.04

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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.