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Finding the Fourth Proportional to 447,338.25, 617,339.75 and 246,134.25

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Solution

The fourth proportional to 447,338.25, 617,339.75 and 246,134.25 is: 339,672.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,338.25 : 617,339.75 = 246,134.25 : x
  2. Step 2: Convert to fraction form
    447,338.25/617,339.75 = 246,134.25/x
  3. Step 3: Cross multiply
    447,338.25x = 617,339.75 × 246,134.25
  4. Step 4: Simplify right side
    447,338.25x = 151,948,455,130.77
  5. Step 5: Solve for x
    x = 151,948,455,130.77/447,338.25
  6. Step 6: Final answer
    x = 339,672.40

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Double scale
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Similar ratio
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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.