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Finding the Fourth Proportional to 436,256.99, 654,400.05 and 120,687.47

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Solution

The fourth proportional to 436,256.99, 654,400.05 and 120,687.47 is: 181,035.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,256.99 : 654,400.05 = 120,687.47 : x
  2. Step 2: Convert to fraction form
    436,256.99/654,400.05 = 120,687.47/x
  3. Step 3: Cross multiply
    436,256.99x = 654,400.05 × 120,687.47
  4. Step 4: Simplify right side
    436,256.99x = 78,977,883,130.37
  5. Step 5: Solve for x
    x = 78,977,883,130.37/436,256.99
  6. Step 6: Final answer
    x = 181,035.23

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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.