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Finding the Fourth Proportional to 281,351.06, 388,264.50 and 154,026.68

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Solution

The fourth proportional to 281,351.06, 388,264.50 and 154,026.68 is: 212,556.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,351.06 : 388,264.50 = 154,026.68 : x
  2. Step 2: Convert to fraction form
    281,351.06/388,264.50 = 154,026.68/x
  3. Step 3: Cross multiply
    281,351.06x = 388,264.50 × 154,026.68
  4. Step 4: Simplify right side
    281,351.06x = 59,803,091,896.86
  5. Step 5: Solve for x
    x = 59,803,091,896.86/281,351.06
  6. Step 6: Final answer
    x = 212,556.84

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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.