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Finding the Fourth Proportional to 584,906.43, 877,638.60 and 318,661.05

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Solution

The fourth proportional to 584,906.43, 877,638.60 and 318,661.05 is: 478,143.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    584,906.43 : 877,638.60 = 318,661.05 : x
  2. Step 2: Convert to fraction form
    584,906.43/877,638.60 = 318,661.05/x
  3. Step 3: Cross multiply
    584,906.43x = 877,638.60 × 318,661.05
  4. Step 4: Simplify right side
    584,906.43x = 279,669,237,796.53
  5. Step 5: Solve for x
    x = 279,669,237,796.53/584,906.43
  6. Step 6: Final answer
    x = 478,143.55

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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.