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Finding the Fourth Proportional to 92,992.74, 139,485.42 and 39,662.70

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Solution

The fourth proportional to 92,992.74, 139,485.42 and 39,662.70 is: 59,492.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,992.74 : 139,485.42 = 39,662.70 : x
  2. Step 2: Convert to fraction form
    92,992.74/139,485.42 = 39,662.70/x
  3. Step 3: Cross multiply
    92,992.74x = 139,485.42 × 39,662.70
  4. Step 4: Simplify right side
    92,992.74x = 5,532,368,367.83
  5. Step 5: Solve for x
    x = 5,532,368,367.83/92,992.74
  6. Step 6: Final answer
    x = 59,492.48

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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.