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Finding the Fourth Proportional to 674,063.10, 930,213.40 and 383,660.48

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Solution

The fourth proportional to 674,063.10, 930,213.40 and 383,660.48 is: 529,455.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,063.10 : 930,213.40 = 383,660.48 : x
  2. Step 2: Convert to fraction form
    674,063.10/930,213.40 = 383,660.48/x
  3. Step 3: Cross multiply
    674,063.10x = 930,213.40 × 383,660.48
  4. Step 4: Simplify right side
    674,063.10x = 356,886,119,546.43
  5. Step 5: Solve for x
    x = 356,886,119,546.43/674,063.10
  6. Step 6: Final answer
    x = 529,455.06

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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.