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Finding the Fourth Proportional to 530,992.11, 732,765.48 and 289,274.88

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Solution

The fourth proportional to 530,992.11, 732,765.48 and 289,274.88 is: 399,197.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,992.11 : 732,765.48 = 289,274.88 : x
  2. Step 2: Convert to fraction form
    530,992.11/732,765.48 = 289,274.88/x
  3. Step 3: Cross multiply
    530,992.11x = 732,765.48 × 289,274.88
  4. Step 4: Simplify right side
    530,992.11x = 211,970,646,295.14
  5. Step 5: Solve for x
    x = 211,970,646,295.14/530,992.11
  6. Step 6: Final answer
    x = 399,197.36

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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.