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Finding the Fourth Proportional to 639,397.89, 882,398.48 and 367,553.79

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Solution

The fourth proportional to 639,397.89, 882,398.48 and 367,553.79 is: 507,241.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,397.89 : 882,398.48 = 367,553.79 : x
  2. Step 2: Convert to fraction form
    639,397.89/882,398.48 = 367,553.79/x
  3. Step 3: Cross multiply
    639,397.89x = 882,398.48 × 367,553.79
  4. Step 4: Simplify right side
    639,397.89x = 324,328,903,776.47
  5. Step 5: Solve for x
    x = 324,328,903,776.47/639,397.89
  6. Step 6: Final answer
    x = 507,241.12

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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.