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Finding the Fourth Proportional to 115,970.60, 173,826.30 and 66,074.60

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Solution

The fourth proportional to 115,970.60, 173,826.30 and 66,074.60 is: 99,038.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,970.60 : 173,826.30 = 66,074.60 : x
  2. Step 2: Convert to fraction form
    115,970.60/173,826.30 = 66,074.60/x
  3. Step 3: Cross multiply
    115,970.60x = 173,826.30 × 66,074.60
  4. Step 4: Simplify right side
    115,970.60x = 11,485,503,241.98
  5. Step 5: Solve for x
    x = 11,485,503,241.98/115,970.60
  6. Step 6: Final answer
    x = 99,038.06

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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.