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Finding the Fourth Proportional to 403,811.80, 605,717.70 and 262,094.20

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Solution

The fourth proportional to 403,811.80, 605,717.70 and 262,094.20 is: 393,141.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,811.80 : 605,717.70 = 262,094.20 : x
  2. Step 2: Convert to fraction form
    403,811.80/605,717.70 = 262,094.20/x
  3. Step 3: Cross multiply
    403,811.80x = 605,717.70 × 262,094.20
  4. Step 4: Simplify right side
    403,811.80x = 158,755,096,007.34
  5. Step 5: Solve for x
    x = 158,755,096,007.34/403,811.80
  6. Step 6: Final answer
    x = 393,141.30

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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.