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Finding the Fourth Proportional to 90,483.51, 135,736.74 and 34,343.22

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Solution

The fourth proportional to 90,483.51, 135,736.74 and 34,343.22 is: 51,519.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,483.51 : 135,736.74 = 34,343.22 : x
  2. Step 2: Convert to fraction form
    90,483.51/135,736.74 = 34,343.22/x
  3. Step 3: Cross multiply
    90,483.51x = 135,736.74 × 34,343.22
  4. Step 4: Simplify right side
    90,483.51x = 4,661,636,723.90
  5. Step 5: Solve for x
    x = 4,661,636,723.90/90,483.51
  6. Step 6: Final answer
    x = 51,519.19

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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.