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Finding the Fourth Proportional to 639,810.06, 882,893.43 and 353,327.64

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Solution

The fourth proportional to 639,810.06, 882,893.43 and 353,327.64 is: 487,567.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,810.06 : 882,893.43 = 353,327.64 : x
  2. Step 2: Convert to fraction form
    639,810.06/882,893.43 = 353,327.64/x
  3. Step 3: Cross multiply
    639,810.06x = 882,893.43 × 353,327.64
  4. Step 4: Simplify right side
    639,810.06x = 311,950,651,993.41
  5. Step 5: Solve for x
    x = 311,950,651,993.41/639,810.06
  6. Step 6: Final answer
    x = 487,567.59

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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.