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Finding the Fourth Proportional to 136,062.64, 187,796.91 and 75,654.46

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Solution

The fourth proportional to 136,062.64, 187,796.91 and 75,654.46 is: 104,420.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,062.64 : 187,796.91 = 75,654.46 : x
  2. Step 2: Convert to fraction form
    136,062.64/187,796.91 = 75,654.46/x
  3. Step 3: Cross multiply
    136,062.64x = 187,796.91 × 75,654.46
  4. Step 4: Simplify right side
    136,062.64x = 14,207,673,815.72
  5. Step 5: Solve for x
    x = 14,207,673,815.72/136,062.64
  6. Step 6: Final answer
    x = 104,420.10

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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.