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Finding the Fourth Proportional to 367,579.80, 551,385.90 and 207,653.40

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Solution

The fourth proportional to 367,579.80, 551,385.90 and 207,653.40 is: 311,489.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,579.80 : 551,385.90 = 207,653.40 : x
  2. Step 2: Convert to fraction form
    367,579.80/551,385.90 = 207,653.40/x
  3. Step 3: Cross multiply
    367,579.80x = 551,385.90 × 207,653.40
  4. Step 4: Simplify right side
    367,579.80x = 114,497,156,847.06
  5. Step 5: Solve for x
    x = 114,497,156,847.06/367,579.80
  6. Step 6: Final answer
    x = 311,489.25

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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.