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Finding the Fourth Proportional to 122,980.29, 184,470.44 and 70,352.87

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Solution

The fourth proportional to 122,980.29, 184,470.44 and 70,352.87 is: 105,529.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,980.29 : 184,470.44 = 70,352.87 : x
  2. Step 2: Convert to fraction form
    122,980.29/184,470.44 = 70,352.87/x
  3. Step 3: Cross multiply
    122,980.29x = 184,470.44 × 70,352.87
  4. Step 4: Simplify right side
    122,980.29x = 12,978,023,610.05
  5. Step 5: Solve for x
    x = 12,978,023,610.05/122,980.29
  6. Step 6: Final answer
    x = 105,529.30

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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.