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Finding the Fourth Proportional to 574,990.90, 793,488.27 and 320,351.02

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Solution

The fourth proportional to 574,990.90, 793,488.27 and 320,351.02 is: 442,084.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    574,990.90 : 793,488.27 = 320,351.02 : x
  2. Step 2: Convert to fraction form
    574,990.90/793,488.27 = 320,351.02/x
  3. Step 3: Cross multiply
    574,990.90x = 793,488.27 × 320,351.02
  4. Step 4: Simplify right side
    574,990.90x = 254,194,776,652.54
  5. Step 5: Solve for x
    x = 254,194,776,652.54/574,990.90
  6. Step 6: Final answer
    x = 442,084.87

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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.