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Finding the Fourth Proportional to 98,190.55, 135,494.65 and 55,166.68

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Solution

The fourth proportional to 98,190.55, 135,494.65 and 55,166.68 is: 76,125.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,190.55 : 135,494.65 = 55,166.68 : x
  2. Step 2: Convert to fraction form
    98,190.55/135,494.65 = 55,166.68/x
  3. Step 3: Cross multiply
    98,190.55x = 135,494.65 × 55,166.68
  4. Step 4: Simplify right side
    98,190.55x = 7,474,789,998.26
  5. Step 5: Solve for x
    x = 7,474,789,998.26/98,190.55
  6. Step 6: Final answer
    x = 76,125.35

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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.