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Finding the Fourth Proportional to 238,412.64, 357,396.64 and 80,530.68

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Solution

The fourth proportional to 238,412.64, 357,396.64 and 80,530.68 is: 120,720.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,412.64 : 357,396.64 = 80,530.68 : x
  2. Step 2: Convert to fraction form
    238,412.64/357,396.64 = 80,530.68/x
  3. Step 3: Cross multiply
    238,412.64x = 357,396.64 × 80,530.68
  4. Step 4: Simplify right side
    238,412.64x = 28,781,394,448.92
  5. Step 5: Solve for x
    x = 28,781,394,448.92/238,412.64
  6. Step 6: Final answer
    x = 120,720.93

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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.