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Finding the Fourth Proportional to 436,886.20, 654,017.10 and 259,301.80

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Solution

The fourth proportional to 436,886.20, 654,017.10 and 259,301.80 is: 388,173.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,886.20 : 654,017.10 = 259,301.80 : x
  2. Step 2: Convert to fraction form
    436,886.20/654,017.10 = 259,301.80/x
  3. Step 3: Cross multiply
    436,886.20x = 654,017.10 × 259,301.80
  4. Step 4: Simplify right side
    436,886.20x = 169,587,811,260.78
  5. Step 5: Solve for x
    x = 169,587,811,260.78/436,886.20
  6. Step 6: Final answer
    x = 388,173.88

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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.