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Finding the Fourth Proportional to 661,099.01, 991,654.99 and 261,837.05

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Solution

The fourth proportional to 661,099.01, 991,654.99 and 261,837.05 is: 392,758.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,099.01 : 991,654.99 = 261,837.05 : x
  2. Step 2: Convert to fraction form
    661,099.01/991,654.99 = 261,837.05/x
  3. Step 3: Cross multiply
    661,099.01x = 991,654.99 × 261,837.05
  4. Step 4: Simplify right side
    661,099.01x = 259,652,011,586.51
  5. Step 5: Solve for x
    x = 259,652,011,586.51/661,099.01
  6. Step 6: Final answer
    x = 392,758.13

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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.