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Finding the Fourth Proportional to 664,006.76, 916,318.49 and 377,520.69

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Solution

The fourth proportional to 664,006.76, 916,318.49 and 377,520.69 is: 520,972.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,006.76 : 916,318.49 = 377,520.69 : x
  2. Step 2: Convert to fraction form
    664,006.76/916,318.49 = 377,520.69/x
  3. Step 3: Cross multiply
    664,006.76x = 916,318.49 × 377,520.69
  4. Step 4: Simplify right side
    664,006.76x = 345,929,189,548.36
  5. Step 5: Solve for x
    x = 345,929,189,548.36/664,006.76
  6. Step 6: Final answer
    x = 520,972.40

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Half scale
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Double scale
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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.