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Finding the Fourth Proportional to 469,915.20, 704,872.80 and 170,405.55

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Solution

The fourth proportional to 469,915.20, 704,872.80 and 170,405.55 is: 255,608.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,915.20 : 704,872.80 = 170,405.55 : x
  2. Step 2: Convert to fraction form
    469,915.20/704,872.80 = 170,405.55/x
  3. Step 3: Cross multiply
    469,915.20x = 704,872.80 × 170,405.55
  4. Step 4: Simplify right side
    469,915.20x = 120,114,237,164.04
  5. Step 5: Solve for x
    x = 120,114,237,164.04/469,915.20
  6. Step 6: Final answer
    x = 255,608.33

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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.