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Finding the Fourth Proportional to 638,361.52, 881,018.64 and 366,514.54

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Solution

The fourth proportional to 638,361.52, 881,018.64 and 366,514.54 is: 505,835.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,361.52 : 881,018.64 = 366,514.54 : x
  2. Step 2: Convert to fraction form
    638,361.52/881,018.64 = 366,514.54/x
  3. Step 3: Cross multiply
    638,361.52x = 881,018.64 × 366,514.54
  4. Step 4: Simplify right side
    638,361.52x = 322,906,141,571.03
  5. Step 5: Solve for x
    x = 322,906,141,571.03/638,361.52
  6. Step 6: Final answer
    x = 505,835.85

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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.