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Finding the Fourth Proportional to 92,912.40, 139,433.40 and 59,713.20

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Solution

The fourth proportional to 92,912.40, 139,433.40 and 59,713.20 is: 89,611.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,912.40 : 139,433.40 = 59,713.20 : x
  2. Step 2: Convert to fraction form
    92,912.40/139,433.40 = 59,713.20/x
  3. Step 3: Cross multiply
    92,912.40x = 139,433.40 × 59,713.20
  4. Step 4: Simplify right side
    92,912.40x = 8,326,014,500.88
  5. Step 5: Solve for x
    x = 8,326,014,500.88/92,912.40
  6. Step 6: Final answer
    x = 89,611.45

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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.