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Finding the Fourth Proportional to 541,383.03, 747,091.76 and 311,940.77

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Solution

The fourth proportional to 541,383.03, 747,091.76 and 311,940.77 is: 430,468.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    541,383.03 : 747,091.76 = 311,940.77 : x
  2. Step 2: Convert to fraction form
    541,383.03/747,091.76 = 311,940.77/x
  3. Step 3: Cross multiply
    541,383.03x = 747,091.76 × 311,940.77
  4. Step 4: Simplify right side
    541,383.03x = 233,048,373,579.89
  5. Step 5: Solve for x
    x = 233,048,373,579.89/541,383.03
  6. Step 6: Final answer
    x = 430,468.56

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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.