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Finding the Fourth Proportional to 190,626.89, 285,942.38 and 57,508.30

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Solution

The fourth proportional to 190,626.89, 285,942.38 and 57,508.30 is: 86,263.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,626.89 : 285,942.38 = 57,508.30 : x
  2. Step 2: Convert to fraction form
    190,626.89/285,942.38 = 57,508.30/x
  3. Step 3: Cross multiply
    190,626.89x = 285,942.38 × 57,508.30
  4. Step 4: Simplify right side
    190,626.89x = 16,444,059,600.67
  5. Step 5: Solve for x
    x = 16,444,059,600.67/190,626.89
  6. Step 6: Final answer
    x = 86,263.07

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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.