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Finding the Fourth Proportional to 358,969.90, 538,351.14 and 122,307.34

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Solution

The fourth proportional to 358,969.90, 538,351.14 and 122,307.34 is: 183,425.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,969.90 : 538,351.14 = 122,307.34 : x
  2. Step 2: Convert to fraction form
    358,969.90/538,351.14 = 122,307.34/x
  3. Step 3: Cross multiply
    358,969.90x = 538,351.14 × 122,307.34
  4. Step 4: Simplify right side
    358,969.90x = 65,844,295,919.37
  5. Step 5: Solve for x
    x = 65,844,295,919.37/358,969.90
  6. Step 6: Final answer
    x = 183,425.67

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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.