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Finding the Fourth Proportional to 222,068.50, 306,458.85 and 121,468.66

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Solution

The fourth proportional to 222,068.50, 306,458.85 and 121,468.66 is: 167,629.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,068.50 : 306,458.85 = 121,468.66 : x
  2. Step 2: Convert to fraction form
    222,068.50/306,458.85 = 121,468.66/x
  3. Step 3: Cross multiply
    222,068.50x = 306,458.85 × 121,468.66
  4. Step 4: Simplify right side
    222,068.50x = 37,225,145,854.64
  5. Step 5: Solve for x
    x = 37,225,145,854.64/222,068.50
  6. Step 6: Final answer
    x = 167,629.11

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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.