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Finding the Fourth Proportional to 458,324.76, 687,520.26 and 191,817.12

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Solution

The fourth proportional to 458,324.76, 687,520.26 and 191,817.12 is: 287,739.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,324.76 : 687,520.26 = 191,817.12 : x
  2. Step 2: Convert to fraction form
    458,324.76/687,520.26 = 191,817.12/x
  3. Step 3: Cross multiply
    458,324.76x = 687,520.26 × 191,817.12
  4. Step 4: Simplify right side
    458,324.76x = 131,878,156,214.85
  5. Step 5: Solve for x
    x = 131,878,156,214.85/458,324.76
  6. Step 6: Final answer
    x = 287,739.54

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1.5x scale

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.