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Finding the Fourth Proportional to 358,855.70, 538,366.94 and 122,200.43

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Solution

The fourth proportional to 358,855.70, 538,366.94 and 122,200.43 is: 183,329.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,855.70 : 538,366.94 = 122,200.43 : x
  2. Step 2: Convert to fraction form
    358,855.70/538,366.94 = 122,200.43/x
  3. Step 3: Cross multiply
    358,855.70x = 538,366.94 × 122,200.43
  4. Step 4: Simplify right side
    358,855.70x = 65,788,668,262.95
  5. Step 5: Solve for x
    x = 65,788,668,262.95/358,855.70
  6. Step 6: Final answer
    x = 183,329.03

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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.