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Finding the Fourth Proportional to 125,749.56, 173,535.56 and 68,389.42

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Solution

The fourth proportional to 125,749.56, 173,535.56 and 68,389.42 is: 94,378.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,749.56 : 173,535.56 = 68,389.42 : x
  2. Step 2: Convert to fraction form
    125,749.56/173,535.56 = 68,389.42/x
  3. Step 3: Cross multiply
    125,749.56x = 173,535.56 × 68,389.42
  4. Step 4: Simplify right side
    125,749.56x = 11,867,996,297.78
  5. Step 5: Solve for x
    x = 11,867,996,297.78/125,749.56
  6. Step 6: Final answer
    x = 94,378.03

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Why These Related Problems?

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