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Finding the Fourth Proportional to 161,940.72, 223,362.50 and 140,391.93

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Solution

The fourth proportional to 161,940.72, 223,362.50 and 140,391.93 is: 193,640.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,940.72 : 223,362.50 = 140,391.93 : x
  2. Step 2: Convert to fraction form
    161,940.72/223,362.50 = 140,391.93/x
  3. Step 3: Cross multiply
    161,940.72x = 223,362.50 × 140,391.93
  4. Step 4: Simplify right side
    161,940.72x = 31,358,292,600.27
  5. Step 5: Solve for x
    x = 31,358,292,600.27/161,940.72
  6. Step 6: Final answer
    x = 193,640.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.