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Finding the Fourth Proportional to 281,953.21, 389,059.46 and 161,102.32

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Solution

The fourth proportional to 281,953.21, 389,059.46 and 161,102.32 is: 222,300.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,953.21 : 389,059.46 = 161,102.32 : x
  2. Step 2: Convert to fraction form
    281,953.21/389,059.46 = 161,102.32/x
  3. Step 3: Cross multiply
    281,953.21x = 389,059.46 × 161,102.32
  4. Step 4: Simplify right side
    281,953.21x = 62,678,382,513.03
  5. Step 5: Solve for x
    x = 62,678,382,513.03/281,953.21
  6. Step 6: Final answer
    x = 222,300.65

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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.