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Finding the Fourth Proportional to 85,503.48, 128,255.22 and 23,173.98

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Solution

The fourth proportional to 85,503.48, 128,255.22 and 23,173.98 is: 34,760.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,503.48 : 128,255.22 = 23,173.98 : x
  2. Step 2: Convert to fraction form
    85,503.48/128,255.22 = 23,173.98/x
  3. Step 3: Cross multiply
    85,503.48x = 128,255.22 × 23,173.98
  4. Step 4: Simplify right side
    85,503.48x = 2,972,183,903.18
  5. Step 5: Solve for x
    x = 2,972,183,903.18/85,503.48
  6. Step 6: Final answer
    x = 34,760.97

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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.