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Finding the Fourth Proportional to 223,756.74, 335,636.01 and 90,639.54

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Solution

The fourth proportional to 223,756.74, 335,636.01 and 90,639.54 is: 135,959.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,756.74 : 335,636.01 = 90,639.54 : x
  2. Step 2: Convert to fraction form
    223,756.74/335,636.01 = 90,639.54/x
  3. Step 3: Cross multiply
    223,756.74x = 335,636.01 × 90,639.54
  4. Step 4: Simplify right side
    223,756.74x = 30,421,893,553.84
  5. Step 5: Solve for x
    x = 30,421,893,553.84/223,756.74
  6. Step 6: Final answer
    x = 135,959.67

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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.