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Finding the Fourth Proportional to 447,783.21, 617,956.11 and 243,837.63

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Solution

The fourth proportional to 447,783.21, 617,956.11 and 243,837.63 is: 336,504.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,783.21 : 617,956.11 = 243,837.63 : x
  2. Step 2: Convert to fraction form
    447,783.21/617,956.11 = 243,837.63/x
  3. Step 3: Cross multiply
    447,783.21x = 617,956.11 × 243,837.63
  4. Step 4: Simplify right side
    447,783.21x = 150,680,953,306.42
  5. Step 5: Solve for x
    x = 150,680,953,306.42/447,783.21
  6. Step 6: Final answer
    x = 336,504.25

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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.