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Finding the Fourth Proportional to 447,178.16, 617,080.20 and 245,974.16

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Solution

The fourth proportional to 447,178.16, 617,080.20 and 245,974.16 is: 339,430.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,178.16 : 617,080.20 = 245,974.16 : x
  2. Step 2: Convert to fraction form
    447,178.16/617,080.20 = 245,974.16/x
  3. Step 3: Cross multiply
    447,178.16x = 617,080.20 × 245,974.16
  4. Step 4: Simplify right side
    447,178.16x = 151,785,783,847.63
  5. Step 5: Solve for x
    x = 151,785,783,847.63/447,178.16
  6. Step 6: Final answer
    x = 339,430.23

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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.