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Finding the Fourth Proportional to 125,815.18, 173,629.72 and 72,110.56

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Solution

The fourth proportional to 125,815.18, 173,629.72 and 72,110.56 is: 99,515.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,815.18 : 173,629.72 = 72,110.56 : x
  2. Step 2: Convert to fraction form
    125,815.18/173,629.72 = 72,110.56/x
  3. Step 3: Cross multiply
    125,815.18x = 173,629.72 × 72,110.56
  4. Step 4: Simplify right side
    125,815.18x = 12,520,536,341.84
  5. Step 5: Solve for x
    x = 12,520,536,341.84/125,815.18
  6. Step 6: Final answer
    x = 99,515.31

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.