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Finding the Fourth Proportional to 286,356.58, 395,181.12 and 171,597.40

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Solution

The fourth proportional to 286,356.58, 395,181.12 and 171,597.40 is: 236,809.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,356.58 : 395,181.12 = 171,597.40 : x
  2. Step 2: Convert to fraction form
    286,356.58/395,181.12 = 171,597.40/x
  3. Step 3: Cross multiply
    286,356.58x = 395,181.12 × 171,597.40
  4. Step 4: Simplify right side
    286,356.58x = 67,812,052,721.09
  5. Step 5: Solve for x
    x = 67,812,052,721.09/286,356.58
  6. Step 6: Final answer
    x = 236,809.83

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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.