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Finding the Fourth Proportional to 640,360.38, 958,455.36 and 471,813.42

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Solution

The fourth proportional to 640,360.38, 958,455.36 and 471,813.42 is: 706,183.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,360.38 : 958,455.36 = 471,813.42 : x
  2. Step 2: Convert to fraction form
    640,360.38/958,455.36 = 471,813.42/x
  3. Step 3: Cross multiply
    640,360.38x = 958,455.36 × 471,813.42
  4. Step 4: Simplify right side
    640,360.38x = 452,212,101,318.93
  5. Step 5: Solve for x
    x = 452,212,101,318.93/640,360.38
  6. Step 6: Final answer
    x = 706,183.76

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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.