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Finding the Fourth Proportional to 90,297.71, 135,455.51 and 33,386.54

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Solution

The fourth proportional to 90,297.71, 135,455.51 and 33,386.54 is: 50,083.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,297.71 : 135,455.51 = 33,386.54 : x
  2. Step 2: Convert to fraction form
    90,297.71/135,455.51 = 33,386.54/x
  3. Step 3: Cross multiply
    90,297.71x = 135,455.51 × 33,386.54
  4. Step 4: Simplify right side
    90,297.71x = 4,522,389,958.63
  5. Step 5: Solve for x
    x = 4,522,389,958.63/90,297.71
  6. Step 6: Final answer
    x = 50,083.11

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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.