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Finding the Fourth Proportional to 92,830.80, 139,121.47 and 50,647.67

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Solution

The fourth proportional to 92,830.80, 139,121.47 and 50,647.67 is: 75,903.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,830.80 : 139,121.47 = 50,647.67 : x
  2. Step 2: Convert to fraction form
    92,830.80/139,121.47 = 50,647.67/x
  3. Step 3: Cross multiply
    92,830.80x = 139,121.47 × 50,647.67
  4. Step 4: Simplify right side
    92,830.80x = 7,046,178,049.24
  5. Step 5: Solve for x
    x = 7,046,178,049.24/92,830.80
  6. Step 6: Final answer
    x = 75,903.45

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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.