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Finding the Fourth Proportional to 492,715.55, 739,095.20 and 193,169.45

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Solution

The fourth proportional to 492,715.55, 739,095.20 and 193,169.45 is: 289,762.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,715.55 : 739,095.20 = 193,169.45 : x
  2. Step 2: Convert to fraction form
    492,715.55/739,095.20 = 193,169.45/x
  3. Step 3: Cross multiply
    492,715.55x = 739,095.20 × 193,169.45
  4. Step 4: Simplify right side
    492,715.55x = 142,770,613,281.64
  5. Step 5: Solve for x
    x = 142,770,613,281.64/492,715.55
  6. Step 6: Final answer
    x = 289,762.75

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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.