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Finding the Fourth Proportional to 436,991.73, 603,039.31 and 243,398.85

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Solution

The fourth proportional to 436,991.73, 603,039.31 and 243,398.85 is: 335,885.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,991.73 : 603,039.31 = 243,398.85 : x
  2. Step 2: Convert to fraction form
    436,991.73/603,039.31 = 243,398.85/x
  3. Step 3: Cross multiply
    436,991.73x = 603,039.31 × 243,398.85
  4. Step 4: Simplify right side
    436,991.73x = 146,779,074,558.79
  5. Step 5: Solve for x
    x = 146,779,074,558.79/436,991.73
  6. Step 6: Final answer
    x = 335,885.25

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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.