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Finding the Fourth Proportional to 807,672.40, 1,211,497.80 and 246,709.60

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Solution

The fourth proportional to 807,672.40, 1,211,497.80 and 246,709.60 is: 370,061.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,672.40 : 1,211,497.80 = 246,709.60 : x
  2. Step 2: Convert to fraction form
    807,672.40/1,211,497.80 = 246,709.60/x
  3. Step 3: Cross multiply
    807,672.40x = 1,211,497.80 × 246,709.60
  4. Step 4: Simplify right side
    807,672.40x = 298,888,137,638.88
  5. Step 5: Solve for x
    x = 298,888,137,638.88/807,672.40
  6. Step 6: Final answer
    x = 370,061.10

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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.