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Finding the Fourth Proportional to 640,593.33, 883,984.11 and 354,094.98

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Solution

The fourth proportional to 640,593.33, 883,984.11 and 354,094.98 is: 488,631.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,593.33 : 883,984.11 = 354,094.98 : x
  2. Step 2: Convert to fraction form
    640,593.33/883,984.11 = 354,094.98/x
  3. Step 3: Cross multiply
    640,593.33x = 883,984.11 × 354,094.98
  4. Step 4: Simplify right side
    640,593.33x = 313,014,335,750.77
  5. Step 5: Solve for x
    x = 313,014,335,750.77/640,593.33
  6. Step 6: Final answer
    x = 488,631.90

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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.