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Finding the Fourth Proportional to 98,796.30, 136,241.82 and 90,600.36

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Solution

The fourth proportional to 98,796.30, 136,241.82 and 90,600.36 is: 124,939.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,796.30 : 136,241.82 = 90,600.36 : x
  2. Step 2: Convert to fraction form
    98,796.30/136,241.82 = 90,600.36/x
  3. Step 3: Cross multiply
    98,796.30x = 136,241.82 × 90,600.36
  4. Step 4: Simplify right side
    98,796.30x = 12,343,557,939.06
  5. Step 5: Solve for x
    x = 12,343,557,939.06/98,796.30
  6. Step 6: Final answer
    x = 124,939.48

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1.5x scale

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.