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Finding the Fourth Proportional to 111,019.40, 166,091.70 and 96,390.80

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Solution

The fourth proportional to 111,019.40, 166,091.70 and 96,390.80 is: 144,206.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,019.40 : 166,091.70 = 96,390.80 : x
  2. Step 2: Convert to fraction form
    111,019.40/166,091.70 = 96,390.80/x
  3. Step 3: Cross multiply
    111,019.40x = 166,091.70 × 96,390.80
  4. Step 4: Simplify right side
    111,019.40x = 16,009,711,836.36
  5. Step 5: Solve for x
    x = 16,009,711,836.36/111,019.40
  6. Step 6: Final answer
    x = 144,206.43

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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.