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Finding the Fourth Proportional to 499,697.68, 689,649.60 and 281,951.16

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Solution

The fourth proportional to 499,697.68, 689,649.60 and 281,951.16 is: 389,130.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,697.68 : 689,649.60 = 281,951.16 : x
  2. Step 2: Convert to fraction form
    499,697.68/689,649.60 = 281,951.16/x
  3. Step 3: Cross multiply
    499,697.68x = 689,649.60 × 281,951.16
  4. Step 4: Simplify right side
    499,697.68x = 194,447,504,713.54
  5. Step 5: Solve for x
    x = 194,447,504,713.54/499,697.68
  6. Step 6: Final answer
    x = 389,130.29

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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.