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Finding the Fourth Proportional to 447,157.20, 617,045.18 and 243,203.96

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Solution

The fourth proportional to 447,157.20, 617,045.18 and 243,203.96 is: 335,604.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,157.20 : 617,045.18 = 243,203.96 : x
  2. Step 2: Convert to fraction form
    447,157.20/617,045.18 = 243,203.96/x
  3. Step 3: Cross multiply
    447,157.20x = 617,045.18 × 243,203.96
  4. Step 4: Simplify right side
    447,157.20x = 150,067,831,601.51
  5. Step 5: Solve for x
    x = 150,067,831,601.51/447,157.20
  6. Step 6: Final answer
    x = 335,604.19

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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.