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Finding the Fourth Proportional to 447,807.40, 617,880.90 and 277,940.68

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Solution

The fourth proportional to 447,807.40, 617,880.90 and 277,940.68 is: 383,500.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,807.40 : 617,880.90 = 277,940.68 : x
  2. Step 2: Convert to fraction form
    447,807.40/617,880.90 = 277,940.68/x
  3. Step 3: Cross multiply
    447,807.40x = 617,880.90 × 277,940.68
  4. Step 4: Simplify right side
    447,807.40x = 171,734,237,505.01
  5. Step 5: Solve for x
    x = 171,734,237,505.01/447,807.40
  6. Step 6: Final answer
    x = 383,500.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.