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Finding the Fourth Proportional to 608,872.34, 840,257.54 and 394,385.73

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Solution

The fourth proportional to 608,872.34, 840,257.54 and 394,385.73 is: 544,261.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,872.34 : 840,257.54 = 394,385.73 : x
  2. Step 2: Convert to fraction form
    608,872.34/840,257.54 = 394,385.73/x
  3. Step 3: Cross multiply
    608,872.34x = 840,257.54 × 394,385.73
  4. Step 4: Simplify right side
    608,872.34x = 331,385,581,328.98
  5. Step 5: Solve for x
    x = 331,385,581,328.98/608,872.34
  6. Step 6: Final answer
    x = 544,261.19

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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.