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Finding the Fourth Proportional to 92,611.32, 138,950.24 and 36,420.31

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Solution

The fourth proportional to 92,611.32, 138,950.24 and 36,420.31 is: 54,643.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,611.32 : 138,950.24 = 36,420.31 : x
  2. Step 2: Convert to fraction form
    92,611.32/138,950.24 = 36,420.31/x
  3. Step 3: Cross multiply
    92,611.32x = 138,950.24 × 36,420.31
  4. Step 4: Simplify right side
    92,611.32x = 5,060,610,815.37
  5. Step 5: Solve for x
    x = 5,060,610,815.37/92,611.32
  6. Step 6: Final answer
    x = 54,643.54

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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.