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Finding the Fourth Proportional to 499,777.40, 689,781.60 and 295,941.48

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Solution

The fourth proportional to 499,777.40, 689,781.60 and 295,941.48 is: 408,451.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,777.40 : 689,781.60 = 295,941.48 : x
  2. Step 2: Convert to fraction form
    499,777.40/689,781.60 = 295,941.48/x
  3. Step 3: Cross multiply
    499,777.40x = 689,781.60 × 295,941.48
  4. Step 4: Simplify right side
    499,777.40x = 204,134,987,580.77
  5. Step 5: Solve for x
    x = 204,134,987,580.77/499,777.40
  6. Step 6: Final answer
    x = 408,451.82

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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.