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Finding the Fourth Proportional to 222,300.64, 306,774.87 and 121,698.64

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Solution

The fourth proportional to 222,300.64, 306,774.87 and 121,698.64 is: 167,944.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,300.64 : 306,774.87 = 121,698.64 : x
  2. Step 2: Convert to fraction form
    222,300.64/306,774.87 = 121,698.64/x
  3. Step 3: Cross multiply
    222,300.64x = 306,774.87 × 121,698.64
  4. Step 4: Simplify right side
    222,300.64x = 37,334,084,465.18
  5. Step 5: Solve for x
    x = 37,334,084,465.18/222,300.64
  6. Step 6: Final answer
    x = 167,944.12

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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.