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Finding the Fourth Proportional to 617,921.40, 926,882.10 and 262,817.40

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Solution

The fourth proportional to 617,921.40, 926,882.10 and 262,817.40 is: 394,226.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,921.40 : 926,882.10 = 262,817.40 : x
  2. Step 2: Convert to fraction form
    617,921.40/926,882.10 = 262,817.40/x
  3. Step 3: Cross multiply
    617,921.40x = 926,882.10 × 262,817.40
  4. Step 4: Simplify right side
    617,921.40x = 243,600,743,628.54
  5. Step 5: Solve for x
    x = 243,600,743,628.54/617,921.40
  6. Step 6: Final answer
    x = 394,226.10

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.