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Finding the Fourth Proportional to 85,773, 128,668.44 and 23,443.56

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Solution

The fourth proportional to 85,773, 128,668.44 and 23,443.56 is: 35,167.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,773 : 128,668.44 = 23,443.56 : x
  2. Step 2: Convert to fraction form
    85,773/128,668.44 = 23,443.56/x
  3. Step 3: Cross multiply
    85,773x = 128,668.44 × 23,443.56
  4. Step 4: Simplify right side
    85,773x = 3,016,446,293.25
  5. Step 5: Solve for x
    x = 3,016,446,293.25/85,773
  6. Step 6: Final answer
    x = 35,167.78

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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.