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Finding the Fourth Proportional to 122,899.70, 184,349.45 and 70,272.25

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Solution

The fourth proportional to 122,899.70, 184,349.45 and 70,272.25 is: 105,408.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,899.70 : 184,349.45 = 70,272.25 : x
  2. Step 2: Convert to fraction form
    122,899.70/184,349.45 = 70,272.25/x
  3. Step 3: Cross multiply
    122,899.70x = 184,349.45 × 70,272.25
  4. Step 4: Simplify right side
    122,899.70x = 12,954,650,352.57
  5. Step 5: Solve for x
    x = 12,954,650,352.57/122,899.70
  6. Step 6: Final answer
    x = 105,408.31

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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.