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Finding the Fourth Proportional to 85,395.78, 128,093.39 and 23,066.30

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Solution

The fourth proportional to 85,395.78, 128,093.39 and 23,066.30 is: 34,599.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,395.78 : 128,093.39 = 23,066.30 : x
  2. Step 2: Convert to fraction form
    85,395.78/128,093.39 = 23,066.30/x
  3. Step 3: Cross multiply
    85,395.78x = 128,093.39 × 23,066.30
  4. Step 4: Simplify right side
    85,395.78x = 2,954,640,561.76
  5. Step 5: Solve for x
    x = 2,954,640,561.76/85,395.78
  6. Step 6: Final answer
    x = 34,599.37

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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.