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Finding the Fourth Proportional to 190,448.28, 285,803.88 and 65,789.28

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Solution

The fourth proportional to 190,448.28, 285,803.88 and 65,789.28 is: 98,729.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,448.28 : 285,803.88 = 65,789.28 : x
  2. Step 2: Convert to fraction form
    190,448.28/285,803.88 = 65,789.28/x
  3. Step 3: Cross multiply
    190,448.28x = 285,803.88 × 65,789.28
  4. Step 4: Simplify right side
    190,448.28x = 18,802,831,239.70
  5. Step 5: Solve for x
    x = 18,802,831,239.70/190,448.28
  6. Step 6: Final answer
    x = 98,729.33

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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.