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Finding the Fourth Proportional to 291,851.69, 437,813.37 and 99,757.89

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Solution

The fourth proportional to 291,851.69, 437,813.37 and 99,757.89 is: 149,649.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,851.69 : 437,813.37 = 99,757.89 : x
  2. Step 2: Convert to fraction form
    291,851.69/437,813.37 = 99,757.89/x
  3. Step 3: Cross multiply
    291,851.69x = 437,813.37 × 99,757.89
  4. Step 4: Simplify right side
    291,851.69x = 43,675,338,004.99
  5. Step 5: Solve for x
    x = 43,675,338,004.99/291,851.69
  6. Step 6: Final answer
    x = 149,649.09

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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.