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Finding the Fourth Proportional to 74,160.70, 111,148.53 and 36,178.67

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Solution

The fourth proportional to 74,160.70, 111,148.53 and 36,178.67 is: 54,222.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,160.70 : 111,148.53 = 36,178.67 : x
  2. Step 2: Convert to fraction form
    74,160.70/111,148.53 = 36,178.67/x
  3. Step 3: Cross multiply
    74,160.70x = 111,148.53 × 36,178.67
  4. Step 4: Simplify right side
    74,160.70x = 4,021,206,130.06
  5. Step 5: Solve for x
    x = 4,021,206,130.06/74,160.70
  6. Step 6: Final answer
    x = 54,222.87

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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.