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Finding the Fourth Proportional to 640,218.92, 883,500.29 and 353,736.96

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Solution

The fourth proportional to 640,218.92, 883,500.29 and 353,736.96 is: 488,156.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,218.92 : 883,500.29 = 353,736.96 : x
  2. Step 2: Convert to fraction form
    640,218.92/883,500.29 = 353,736.96/x
  3. Step 3: Cross multiply
    640,218.92x = 883,500.29 × 353,736.96
  4. Step 4: Simplify right side
    640,218.92x = 312,526,709,836.81
  5. Step 5: Solve for x
    x = 312,526,709,836.81/640,218.92
  6. Step 6: Final answer
    x = 488,156.01

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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.