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Finding the Fourth Proportional to 355,090.80, 532,636.20 and 222,230.55

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Solution

The fourth proportional to 355,090.80, 532,636.20 and 222,230.55 is: 333,345.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,090.80 : 532,636.20 = 222,230.55 : x
  2. Step 2: Convert to fraction form
    355,090.80/532,636.20 = 222,230.55/x
  3. Step 3: Cross multiply
    355,090.80x = 532,636.20 × 222,230.55
  4. Step 4: Simplify right side
    355,090.80x = 118,368,035,675.91
  5. Step 5: Solve for x
    x = 118,368,035,675.91/355,090.80
  6. Step 6: Final answer
    x = 333,345.83

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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.