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Finding the Fourth Proportional to 45,336.96, 68,025.96 and 23,139

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Solution

The fourth proportional to 45,336.96, 68,025.96 and 23,139 is: 34,718.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,336.96 : 68,025.96 = 23,139 : x
  2. Step 2: Convert to fraction form
    45,336.96/68,025.96 = 23,139/x
  3. Step 3: Cross multiply
    45,336.96x = 68,025.96 × 23,139
  4. Step 4: Simplify right side
    45,336.96x = 1,574,052,688.44
  5. Step 5: Solve for x
    x = 1,574,052,688.44/45,336.96
  6. Step 6: Final answer
    x = 34,718.97

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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.