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Finding the Fourth Proportional to 665,018.86, 917,747.90 and 363,212.86

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Solution

The fourth proportional to 665,018.86, 917,747.90 and 363,212.86 is: 501,245.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,018.86 : 917,747.90 = 363,212.86 : x
  2. Step 2: Convert to fraction form
    665,018.86/917,747.90 = 363,212.86/x
  3. Step 3: Cross multiply
    665,018.86x = 917,747.90 × 363,212.86
  4. Step 4: Simplify right side
    665,018.86x = 333,337,837,468.85
  5. Step 5: Solve for x
    x = 333,337,837,468.85/665,018.86
  6. Step 6: Final answer
    x = 501,245.69

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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.