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Finding the Fourth Proportional to 636,321, 954,487.26 and 193,089

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Solution

The fourth proportional to 636,321, 954,487.26 and 193,089 is: 289,635.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,321 : 954,487.26 = 193,089 : x
  2. Step 2: Convert to fraction form
    636,321/954,487.26 = 193,089/x
  3. Step 3: Cross multiply
    636,321x = 954,487.26 × 193,089
  4. Step 4: Simplify right side
    636,321x = 184,300,990,546.14
  5. Step 5: Solve for x
    x = 184,300,990,546.14/636,321
  6. Step 6: Final answer
    x = 289,635.25

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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.