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Finding the Fourth Proportional to 248,409.76, 342,808.56 and 135,232.48

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Solution

The fourth proportional to 248,409.76, 342,808.56 and 135,232.48 is: 186,622.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,409.76 : 342,808.56 = 135,232.48 : x
  2. Step 2: Convert to fraction form
    248,409.76/342,808.56 = 135,232.48/x
  3. Step 3: Cross multiply
    248,409.76x = 342,808.56 × 135,232.48
  4. Step 4: Simplify right side
    248,409.76x = 46,358,851,734.03
  5. Step 5: Solve for x
    x = 46,358,851,734.03/248,409.76
  6. Step 6: Final answer
    x = 186,622.51

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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.