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Finding the Fourth Proportional to 85,497.75, 128,246.67 and 23,168.25

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Solution

The fourth proportional to 85,497.75, 128,246.67 and 23,168.25 is: 34,752.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,497.75 : 128,246.67 = 23,168.25 : x
  2. Step 2: Convert to fraction form
    85,497.75/128,246.67 = 23,168.25/x
  3. Step 3: Cross multiply
    85,497.75x = 128,246.67 × 23,168.25
  4. Step 4: Simplify right side
    85,497.75x = 2,971,250,912.23
  5. Step 5: Solve for x
    x = 2,971,250,912.23/85,497.75
  6. Step 6: Final answer
    x = 34,752.39

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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.