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Finding the Fourth Proportional to 574,989.90, 793,486.89 and 320,350.02

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Solution

The fourth proportional to 574,989.90, 793,486.89 and 320,350.02 is: 442,083.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    574,989.90 : 793,486.89 = 320,350.02 : x
  2. Step 2: Convert to fraction form
    574,989.90/793,486.89 = 320,350.02/x
  3. Step 3: Cross multiply
    574,989.90x = 793,486.89 × 320,350.02
  4. Step 4: Simplify right side
    574,989.90x = 254,193,541,081.24
  5. Step 5: Solve for x
    x = 254,193,541,081.24/574,989.90
  6. Step 6: Final answer
    x = 442,083.49

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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.