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Finding the Fourth Proportional to 436,157.81, 654,236.51 and 136,661.93

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Solution

The fourth proportional to 436,157.81, 654,236.51 and 136,661.93 is: 204,992.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,157.81 : 654,236.51 = 136,661.93 : x
  2. Step 2: Convert to fraction form
    436,157.81/654,236.51 = 136,661.93/x
  3. Step 3: Cross multiply
    436,157.81x = 654,236.51 × 136,661.93
  4. Step 4: Simplify right side
    436,157.81x = 89,409,220,178.57
  5. Step 5: Solve for x
    x = 89,409,220,178.57/436,157.81
  6. Step 6: Final answer
    x = 204,992.82

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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.