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Finding the Fourth Proportional to 122,414.40, 183,477.60 and 69,873.60

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Solution

The fourth proportional to 122,414.40, 183,477.60 and 69,873.60 is: 104,728.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,414.40 : 183,477.60 = 69,873.60 : x
  2. Step 2: Convert to fraction form
    122,414.40/183,477.60 = 69,873.60/x
  3. Step 3: Cross multiply
    122,414.40x = 183,477.60 × 69,873.60
  4. Step 4: Simplify right side
    122,414.40x = 12,820,240,431.36
  5. Step 5: Solve for x
    x = 12,820,240,431.36/122,414.40
  6. Step 6: Final answer
    x = 104,728.21

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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.