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Finding the Fourth Proportional to 358,813.80, 538,293.60 and 122,180.40

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Solution

The fourth proportional to 358,813.80, 538,293.60 and 122,180.40 is: 183,295.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,813.80 : 538,293.60 = 122,180.40 : x
  2. Step 2: Convert to fraction form
    358,813.80/538,293.60 = 122,180.40/x
  3. Step 3: Cross multiply
    358,813.80x = 538,293.60 × 122,180.40
  4. Step 4: Simplify right side
    358,813.80x = 65,768,927,365.44
  5. Step 5: Solve for x
    x = 65,768,927,365.44/358,813.80
  6. Step 6: Final answer
    x = 183,295.42

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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.