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Finding the Fourth Proportional to 295,718.80, 443,578.20 and 245,855.20

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Solution

The fourth proportional to 295,718.80, 443,578.20 and 245,855.20 is: 368,782.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,718.80 : 443,578.20 = 245,855.20 : x
  2. Step 2: Convert to fraction form
    295,718.80/443,578.20 = 245,855.20/x
  3. Step 3: Cross multiply
    295,718.80x = 443,578.20 × 245,855.20
  4. Step 4: Simplify right side
    295,718.80x = 109,056,007,076.64
  5. Step 5: Solve for x
    x = 109,056,007,076.64/295,718.80
  6. Step 6: Final answer
    x = 368,782.80

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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.