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Finding the Fourth Proportional to 187,793.78, 281,690.60 and 45,638.30

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Solution

The fourth proportional to 187,793.78, 281,690.60 and 45,638.30 is: 68,457.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,793.78 : 281,690.60 = 45,638.30 : x
  2. Step 2: Convert to fraction form
    187,793.78/281,690.60 = 45,638.30/x
  3. Step 3: Cross multiply
    187,793.78x = 281,690.60 × 45,638.30
  4. Step 4: Simplify right side
    187,793.78x = 12,855,880,586.02
  5. Step 5: Solve for x
    x = 12,855,880,586.02/187,793.78
  6. Step 6: Final answer
    x = 68,457.44

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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.