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Finding the Fourth Proportional to 116,000.70, 174,163.05 and 74,139.90

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Solution

The fourth proportional to 116,000.70, 174,163.05 and 74,139.90 is: 111,313.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,000.70 : 174,163.05 = 74,139.90 : x
  2. Step 2: Convert to fraction form
    116,000.70/174,163.05 = 74,139.90/x
  3. Step 3: Cross multiply
    116,000.70x = 174,163.05 × 74,139.90
  4. Step 4: Simplify right side
    116,000.70x = 12,912,431,110.70
  5. Step 5: Solve for x
    x = 12,912,431,110.70/116,000.70
  6. Step 6: Final answer
    x = 111,313.39

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1.5x scale

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.