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Finding the Fourth Proportional to 515,840.67, 773,408.05 and 262,631.16

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Solution

The fourth proportional to 515,840.67, 773,408.05 and 262,631.16 is: 393,767.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,840.67 : 773,408.05 = 262,631.16 : x
  2. Step 2: Convert to fraction form
    515,840.67/773,408.05 = 262,631.16/x
  3. Step 3: Cross multiply
    515,840.67x = 773,408.05 × 262,631.16
  4. Step 4: Simplify right side
    515,840.67x = 203,121,052,668.26
  5. Step 5: Solve for x
    x = 203,121,052,668.26/515,840.67
  6. Step 6: Final answer
    x = 393,767.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.