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Finding the Fourth Proportional to 639,546.80, 882,568.88 and 353,060.73

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Solution

The fourth proportional to 639,546.80, 882,568.88 and 353,060.73 is: 487,220.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,546.80 : 882,568.88 = 353,060.73 : x
  2. Step 2: Convert to fraction form
    639,546.80/882,568.88 = 353,060.73/x
  3. Step 3: Cross multiply
    639,546.80x = 882,568.88 × 353,060.73
  4. Step 4: Simplify right side
    639,546.80x = 311,600,412,606.76
  5. Step 5: Solve for x
    x = 311,600,412,606.76/639,546.80
  6. Step 6: Final answer
    x = 487,220.66

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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.