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Finding the Fourth Proportional to 270,587.22, 405,766.68 and 81,074.52

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Solution

The fourth proportional to 270,587.22, 405,766.68 and 81,074.52 is: 121,577.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,587.22 : 405,766.68 = 81,074.52 : x
  2. Step 2: Convert to fraction form
    270,587.22/405,766.68 = 81,074.52/x
  3. Step 3: Cross multiply
    270,587.22x = 405,766.68 × 81,074.52
  4. Step 4: Simplify right side
    270,587.22x = 32,897,338,812.99
  5. Step 5: Solve for x
    x = 32,897,338,812.99/270,587.22
  6. Step 6: Final answer
    x = 121,577.58

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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.