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Finding the Fourth Proportional to 122,581.76, 184,028.16 and 104,230.40

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Solution

The fourth proportional to 122,581.76, 184,028.16 and 104,230.40 is: 156,477.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,581.76 : 184,028.16 = 104,230.40 : x
  2. Step 2: Convert to fraction form
    122,581.76/184,028.16 = 104,230.40/x
  3. Step 3: Cross multiply
    122,581.76x = 184,028.16 × 104,230.40
  4. Step 4: Simplify right side
    122,581.76x = 19,181,328,728.06
  5. Step 5: Solve for x
    x = 19,181,328,728.06/122,581.76
  6. Step 6: Final answer
    x = 156,477.84

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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.