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Finding the Fourth Proportional to 294,286.60, 441,429.90 and 72,670.60

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Solution

The fourth proportional to 294,286.60, 441,429.90 and 72,670.60 is: 109,005.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    294,286.60 : 441,429.90 = 72,670.60 : x
  2. Step 2: Convert to fraction form
    294,286.60/441,429.90 = 72,670.60/x
  3. Step 3: Cross multiply
    294,286.60x = 441,429.90 × 72,670.60
  4. Step 4: Simplify right side
    294,286.60x = 32,078,975,690.94
  5. Step 5: Solve for x
    x = 32,078,975,690.94/294,286.60
  6. Step 6: Final answer
    x = 109,005.90

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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.