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Finding the Fourth Proportional to 681,644.10, 940,558.23 and 395,108.22

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Solution

The fourth proportional to 681,644.10, 940,558.23 and 395,108.22 is: 545,185.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,644.10 : 940,558.23 = 395,108.22 : x
  2. Step 2: Convert to fraction form
    681,644.10/940,558.23 = 395,108.22/x
  3. Step 3: Cross multiply
    681,644.10x = 940,558.23 × 395,108.22
  4. Step 4: Simplify right side
    681,644.10x = 371,622,288,061.65
  5. Step 5: Solve for x
    x = 371,622,288,061.65/681,644.10
  6. Step 6: Final answer
    x = 545,185.22

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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.