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Finding the Fourth Proportional to 621,796.52, 931,568.47 and 285,118.81

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Solution

The fourth proportional to 621,796.52, 931,568.47 and 285,118.81 is: 427,161.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,796.52 : 931,568.47 = 285,118.81 : x
  2. Step 2: Convert to fraction form
    621,796.52/931,568.47 = 285,118.81/x
  3. Step 3: Cross multiply
    621,796.52x = 931,568.47 × 285,118.81
  4. Step 4: Simplify right side
    621,796.52x = 265,607,690,558.20
  5. Step 5: Solve for x
    x = 265,607,690,558.20/621,796.52
  6. Step 6: Final answer
    x = 427,161.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.