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Finding the Fourth Proportional to 713,801.75, 985,133.91 and 411,995.75

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Solution

The fourth proportional to 713,801.75, 985,133.91 and 411,995.75 is: 568,604.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,801.75 : 985,133.91 = 411,995.75 : x
  2. Step 2: Convert to fraction form
    713,801.75/985,133.91 = 411,995.75/x
  3. Step 3: Cross multiply
    713,801.75x = 985,133.91 × 411,995.75
  4. Step 4: Simplify right side
    713,801.75x = 405,870,984,100.88
  5. Step 5: Solve for x
    x = 405,870,984,100.88/713,801.75
  6. Step 6: Final answer
    x = 568,604.64

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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.