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Finding the Fourth Proportional to 289,594.22, 399,403.04 and 203,837.09

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Solution

The fourth proportional to 289,594.22, 399,403.04 and 203,837.09 is: 281,128.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,594.22 : 399,403.04 = 203,837.09 : x
  2. Step 2: Convert to fraction form
    289,594.22/399,403.04 = 203,837.09/x
  3. Step 3: Cross multiply
    289,594.22x = 399,403.04 × 203,837.09
  4. Step 4: Simplify right side
    289,594.22x = 81,413,151,923.33
  5. Step 5: Solve for x
    x = 81,413,151,923.33/289,594.22
  6. Step 6: Final answer
    x = 281,128.38

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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.