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Finding the Fourth Proportional to 98,682.15, 136,173.15 and 55,659.27

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Solution

The fourth proportional to 98,682.15, 136,173.15 and 55,659.27 is: 76,805.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,682.15 : 136,173.15 = 55,659.27 : x
  2. Step 2: Convert to fraction form
    98,682.15/136,173.15 = 55,659.27/x
  3. Step 3: Cross multiply
    98,682.15x = 136,173.15 × 55,659.27
  4. Step 4: Simplify right side
    98,682.15x = 7,579,298,122.60
  5. Step 5: Solve for x
    x = 7,579,298,122.60/98,682.15
  6. Step 6: Final answer
    x = 76,805.16

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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.