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Finding the Fourth Proportional to 308,408.40, 461,921.40 and 183,992.40

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Solution

The fourth proportional to 308,408.40, 461,921.40 and 183,992.40 is: 275,576.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,408.40 : 461,921.40 = 183,992.40 : x
  2. Step 2: Convert to fraction form
    308,408.40/461,921.40 = 183,992.40/x
  3. Step 3: Cross multiply
    308,408.40x = 461,921.40 × 183,992.40
  4. Step 4: Simplify right side
    308,408.40x = 84,990,026,997.36
  5. Step 5: Solve for x
    x = 84,990,026,997.36/308,408.40
  6. Step 6: Final answer
    x = 275,576.24

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1.5x scale

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.