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Finding the Fourth Proportional to 222,987.53, 307,723.01 and 121,013.01

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Solution

The fourth proportional to 222,987.53, 307,723.01 and 121,013.01 is: 166,998.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,987.53 : 307,723.01 = 121,013.01 : x
  2. Step 2: Convert to fraction form
    222,987.53/307,723.01 = 121,013.01/x
  3. Step 3: Cross multiply
    222,987.53x = 307,723.01 × 121,013.01
  4. Step 4: Simplify right side
    222,987.53x = 37,238,487,081.30
  5. Step 5: Solve for x
    x = 37,238,487,081.30/222,987.53
  6. Step 6: Final answer
    x = 166,998.07

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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.