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Finding the Fourth Proportional to 115,910.40, 173,890.80 and 66,014.40

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Solution

The fourth proportional to 115,910.40, 173,890.80 and 66,014.40 is: 99,035.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,910.40 : 173,890.80 = 66,014.40 : x
  2. Step 2: Convert to fraction form
    115,910.40/173,890.80 = 66,014.40/x
  3. Step 3: Cross multiply
    115,910.40x = 173,890.80 × 66,014.40
  4. Step 4: Simplify right side
    115,910.40x = 11,479,296,827.52
  5. Step 5: Solve for x
    x = 11,479,296,827.52/115,910.40
  6. Step 6: Final answer
    x = 99,035.95

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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.