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Finding the Fourth Proportional to 190,276.80, 285,220.80 and 111,350.40

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Solution

The fourth proportional to 190,276.80, 285,220.80 and 111,350.40 is: 166,911.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,276.80 : 285,220.80 = 111,350.40 : x
  2. Step 2: Convert to fraction form
    190,276.80/285,220.80 = 111,350.40/x
  3. Step 3: Cross multiply
    190,276.80x = 285,220.80 × 111,350.40
  4. Step 4: Simplify right side
    190,276.80x = 31,759,450,168.32
  5. Step 5: Solve for x
    x = 31,759,450,168.32/190,276.80
  6. Step 6: Final answer
    x = 166,911.84

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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.