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Finding the Fourth Proportional to 595,351.44, 821,109.84 and 391,611.60

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Solution

The fourth proportional to 595,351.44, 821,109.84 and 391,611.60 is: 540,111.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    595,351.44 : 821,109.84 = 391,611.60 : x
  2. Step 2: Convert to fraction form
    595,351.44/821,109.84 = 391,611.60/x
  3. Step 3: Cross multiply
    595,351.44x = 821,109.84 × 391,611.60
  4. Step 4: Simplify right side
    595,351.44x = 321,556,138,218.14
  5. Step 5: Solve for x
    x = 321,556,138,218.14/595,351.44
  6. Step 6: Final answer
    x = 540,111.46

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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.