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Finding the Fourth Proportional to 436,806.78, 655,209.90 and 121,263.60

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Solution

The fourth proportional to 436,806.78, 655,209.90 and 121,263.60 is: 181,895.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,806.78 : 655,209.90 = 121,263.60 : x
  2. Step 2: Convert to fraction form
    436,806.78/655,209.90 = 121,263.60/x
  3. Step 3: Cross multiply
    436,806.78x = 655,209.90 × 121,263.60
  4. Step 4: Simplify right side
    436,806.78x = 79,453,111,229.64
  5. Step 5: Solve for x
    x = 79,453,111,229.64/436,806.78
  6. Step 6: Final answer
    x = 181,895.33

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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.