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Finding the Fourth Proportional to 222,921.45, 334,475.98 and 138,752.03

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Solution

The fourth proportional to 222,921.45, 334,475.98 and 138,752.03 is: 208,186.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,921.45 : 334,475.98 = 138,752.03 : x
  2. Step 2: Convert to fraction form
    222,921.45/334,475.98 = 138,752.03/x
  3. Step 3: Cross multiply
    222,921.45x = 334,475.98 × 138,752.03
  4. Step 4: Simplify right side
    222,921.45x = 46,409,221,700.55
  5. Step 5: Solve for x
    x = 46,409,221,700.55/222,921.45
  6. Step 6: Final answer
    x = 208,186.43

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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.