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Finding the Fourth Proportional to 92,980.89, 139,471.32 and 30,651.39

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Solution

The fourth proportional to 92,980.89, 139,471.32 and 30,651.39 is: 45,977.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,980.89 : 139,471.32 = 30,651.39 : x
  2. Step 2: Convert to fraction form
    92,980.89/139,471.32 = 30,651.39/x
  3. Step 3: Cross multiply
    92,980.89x = 139,471.32 × 30,651.39
  4. Step 4: Simplify right side
    92,980.89x = 4,274,989,823.13
  5. Step 5: Solve for x
    x = 4,274,989,823.13/92,980.89
  6. Step 6: Final answer
    x = 45,977.08

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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.