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Finding the Fourth Proportional to 98,186.70, 135,497.70 and 54,579.24

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Solution

The fourth proportional to 98,186.70, 135,497.70 and 54,579.24 is: 75,319.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,186.70 : 135,497.70 = 54,579.24 : x
  2. Step 2: Convert to fraction form
    98,186.70/135,497.70 = 54,579.24/x
  3. Step 3: Cross multiply
    98,186.70x = 135,497.70 × 54,579.24
  4. Step 4: Simplify right side
    98,186.70x = 7,395,361,487.75
  5. Step 5: Solve for x
    x = 7,395,361,487.75/98,186.70
  6. Step 6: Final answer
    x = 75,319.38

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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.