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Finding the Fourth Proportional to 270,611.12, 405,869.16 and 83,624.24

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Solution

The fourth proportional to 270,611.12, 405,869.16 and 83,624.24 is: 125,421.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,611.12 : 405,869.16 = 83,624.24 : x
  2. Step 2: Convert to fraction form
    270,611.12/405,869.16 = 83,624.24/x
  3. Step 3: Cross multiply
    270,611.12x = 405,869.16 × 83,624.24
  4. Step 4: Simplify right side
    270,611.12x = 33,940,500,044.44
  5. Step 5: Solve for x
    x = 33,940,500,044.44/270,611.12
  6. Step 6: Final answer
    x = 125,421.68

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1.5x scale

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.