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Finding the Fourth Proportional to 65,986.79, 91,040.36 and 37,303.67

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Solution

The fourth proportional to 65,986.79, 91,040.36 and 37,303.67 is: 51,466.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,986.79 : 91,040.36 = 37,303.67 : x
  2. Step 2: Convert to fraction form
    65,986.79/91,040.36 = 37,303.67/x
  3. Step 3: Cross multiply
    65,986.79x = 91,040.36 × 37,303.67
  4. Step 4: Simplify right side
    65,986.79x = 3,396,139,587.20
  5. Step 5: Solve for x
    x = 3,396,139,587.20/65,986.79
  6. Step 6: Final answer
    x = 51,466.97

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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.