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Finding the Fourth Proportional to 450,626.20, 676,026.78 and 135,056.68

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Solution

The fourth proportional to 450,626.20, 676,026.78 and 135,056.68 is: 202,611.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,626.20 : 676,026.78 = 135,056.68 : x
  2. Step 2: Convert to fraction form
    450,626.20/676,026.78 = 135,056.68/x
  3. Step 3: Cross multiply
    450,626.20x = 676,026.78 × 135,056.68
  4. Step 4: Simplify right side
    450,626.20x = 91,301,932,497.89
  5. Step 5: Solve for x
    x = 91,301,932,497.89/450,626.20
  6. Step 6: Final answer
    x = 202,611.24

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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.