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Finding the Fourth Proportional to 613,381.92, 920,466.60 and 297,666.60

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Solution

The fourth proportional to 613,381.92, 920,466.60 and 297,666.60 is: 446,690.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,381.92 : 920,466.60 = 297,666.60 : x
  2. Step 2: Convert to fraction form
    613,381.92/920,466.60 = 297,666.60/x
  3. Step 3: Cross multiply
    613,381.92x = 920,466.60 × 297,666.60
  4. Step 4: Simplify right side
    613,381.92x = 273,992,163,235.56
  5. Step 5: Solve for x
    x = 273,992,163,235.56/613,381.92
  6. Step 6: Final answer
    x = 446,690.97

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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.