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Finding the Fourth Proportional to 342,715.18, 514,059.96 and 89,993.38

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Solution

The fourth proportional to 342,715.18, 514,059.96 and 89,993.38 is: 134,986.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,715.18 : 514,059.96 = 89,993.38 : x
  2. Step 2: Convert to fraction form
    342,715.18/514,059.96 = 89,993.38/x
  3. Step 3: Cross multiply
    342,715.18x = 514,059.96 × 89,993.38
  4. Step 4: Simplify right side
    342,715.18x = 46,261,993,323.06
  5. Step 5: Solve for x
    x = 46,261,993,323.06/342,715.18
  6. Step 6: Final answer
    x = 134,986.71

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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.