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Finding the Fourth Proportional to 436,322.89, 654,411.43 and 120,811.69

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Solution

The fourth proportional to 436,322.89, 654,411.43 and 120,811.69 is: 181,197.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,322.89 : 654,411.43 = 120,811.69 : x
  2. Step 2: Convert to fraction form
    436,322.89/654,411.43 = 120,811.69/x
  3. Step 3: Cross multiply
    436,322.89x = 654,411.43 × 120,811.69
  4. Step 4: Simplify right side
    436,322.89x = 79,060,550,813.62
  5. Step 5: Solve for x
    x = 79,060,550,813.62/436,322.89
  6. Step 6: Final answer
    x = 181,197.35

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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.