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Finding the Fourth Proportional to 358,855.75, 538,265.74 and 134,199.67

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Solution

The fourth proportional to 358,855.75, 538,265.74 and 134,199.67 is: 201,292.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,855.75 : 538,265.74 = 134,199.67 : x
  2. Step 2: Convert to fraction form
    358,855.75/538,265.74 = 134,199.67/x
  3. Step 3: Cross multiply
    358,855.75x = 538,265.74 × 134,199.67
  4. Step 4: Simplify right side
    358,855.75x = 72,235,081,317.98
  5. Step 5: Solve for x
    x = 72,235,081,317.98/358,855.75
  6. Step 6: Final answer
    x = 201,292.81

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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.