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Finding the Fourth Proportional to 190,018.80, 285,071.40 and 111,092.40

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Solution

The fourth proportional to 190,018.80, 285,071.40 and 111,092.40 is: 166,663.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,018.80 : 285,071.40 = 111,092.40 : x
  2. Step 2: Convert to fraction form
    190,018.80/285,071.40 = 111,092.40/x
  3. Step 3: Cross multiply
    190,018.80x = 285,071.40 × 111,092.40
  4. Step 4: Simplify right side
    190,018.80x = 31,669,265,997.36
  5. Step 5: Solve for x
    x = 31,669,265,997.36/190,018.80
  6. Step 6: Final answer
    x = 166,663.86

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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.