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Finding the Fourth Proportional to 640,800.09, 884,156.85 and 382,626.63

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Solution

The fourth proportional to 640,800.09, 884,156.85 and 382,626.63 is: 527,936.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,800.09 : 884,156.85 = 382,626.63 : x
  2. Step 2: Convert to fraction form
    640,800.09/884,156.85 = 382,626.63/x
  3. Step 3: Cross multiply
    640,800.09x = 884,156.85 × 382,626.63
  4. Step 4: Simplify right side
    640,800.09x = 338,301,955,906.92
  5. Step 5: Solve for x
    x = 338,301,955,906.92/640,800.09
  6. Step 6: Final answer
    x = 527,936.81

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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.