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Finding the Fourth Proportional to 447,477.76, 617,546.87 and 256,519.86

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Solution

The fourth proportional to 447,477.76, 617,546.87 and 256,519.86 is: 354,013.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,477.76 : 617,546.87 = 256,519.86 : x
  2. Step 2: Convert to fraction form
    447,477.76/617,546.87 = 256,519.86/x
  3. Step 3: Cross multiply
    447,477.76x = 617,546.87 × 256,519.86
  4. Step 4: Simplify right side
    447,477.76x = 158,413,036,635.84
  5. Step 5: Solve for x
    x = 158,413,036,635.84/447,477.76
  6. Step 6: Final answer
    x = 354,013.21

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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.