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Finding the Fourth Proportional to 222,705.05, 307,473.10 and 154,700.15

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Solution

The fourth proportional to 222,705.05, 307,473.10 and 154,700.15 is: 213,583.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,705.05 : 307,473.10 = 154,700.15 : x
  2. Step 2: Convert to fraction form
    222,705.05/307,473.10 = 154,700.15/x
  3. Step 3: Cross multiply
    222,705.05x = 307,473.10 × 154,700.15
  4. Step 4: Simplify right side
    222,705.05x = 47,566,132,766.85
  5. Step 5: Solve for x
    x = 47,566,132,766.85/222,705.05
  6. Step 6: Final answer
    x = 213,583.54

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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.