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Finding the Fourth Proportional to 110,739.70, 166,109.55 and 91,056.70

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Solution

The fourth proportional to 110,739.70, 166,109.55 and 91,056.70 is: 136,585.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,739.70 : 166,109.55 = 91,056.70 : x
  2. Step 2: Convert to fraction form
    110,739.70/166,109.55 = 91,056.70/x
  3. Step 3: Cross multiply
    110,739.70x = 166,109.55 × 91,056.70
  4. Step 4: Simplify right side
    110,739.70x = 15,125,387,461.49
  5. Step 5: Solve for x
    x = 15,125,387,461.49/110,739.70
  6. Step 6: Final answer
    x = 136,585.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.