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Finding the Fourth Proportional to 168,433.06, 232,415.56 and 100,458.01

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Solution

The fourth proportional to 168,433.06, 232,415.56 and 100,458.01 is: 138,618.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,433.06 : 232,415.56 = 100,458.01 : x
  2. Step 2: Convert to fraction form
    168,433.06/232,415.56 = 100,458.01/x
  3. Step 3: Cross multiply
    168,433.06x = 232,415.56 × 100,458.01
  4. Step 4: Simplify right side
    168,433.06x = 23,348,003,944.02
  5. Step 5: Solve for x
    x = 23,348,003,944.02/168,433.06
  6. Step 6: Final answer
    x = 138,618.89

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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.