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Finding the Fourth Proportional to 281,587.01, 422,376.68 and 68,356.56

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Solution

The fourth proportional to 281,587.01, 422,376.68 and 68,356.56 is: 102,533.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,587.01 : 422,376.68 = 68,356.56 : x
  2. Step 2: Convert to fraction form
    281,587.01/422,376.68 = 68,356.56/x
  3. Step 3: Cross multiply
    281,587.01x = 422,376.68 × 68,356.56
  4. Step 4: Simplify right side
    281,587.01x = 28,872,218,536.30
  5. Step 5: Solve for x
    x = 28,872,218,536.30/281,587.01
  6. Step 6: Final answer
    x = 102,533.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.