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Finding the Fourth Proportional to 666,115.86, 918,120.27 and 504,919.38

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Solution

The fourth proportional to 666,115.86, 918,120.27 and 504,919.38 is: 695,940.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,115.86 : 918,120.27 = 504,919.38 : x
  2. Step 2: Convert to fraction form
    666,115.86/918,120.27 = 504,919.38/x
  3. Step 3: Cross multiply
    666,115.86x = 918,120.27 × 504,919.38
  4. Step 4: Simplify right side
    666,115.86x = 463,576,717,493.83
  5. Step 5: Solve for x
    x = 463,576,717,493.83/666,115.86
  6. Step 6: Final answer
    x = 695,940.07

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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.