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Finding the Fourth Proportional to 248,586.72, 343,050.96 and 135,409.44

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Solution

The fourth proportional to 248,586.72, 343,050.96 and 135,409.44 is: 186,865.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,586.72 : 343,050.96 = 135,409.44 : x
  2. Step 2: Convert to fraction form
    248,586.72/343,050.96 = 135,409.44/x
  3. Step 3: Cross multiply
    248,586.72x = 343,050.96 × 135,409.44
  4. Step 4: Simplify right side
    248,586.72x = 46,452,338,385.06
  5. Step 5: Solve for x
    x = 46,452,338,385.06/248,586.72
  6. Step 6: Final answer
    x = 186,865.73

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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.