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Finding the Fourth Proportional to 201,371.43, 301,992.59 and 66,405.20

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Solution

The fourth proportional to 201,371.43, 301,992.59 and 66,405.20 is: 99,586.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,371.43 : 301,992.59 = 66,405.20 : x
  2. Step 2: Convert to fraction form
    201,371.43/301,992.59 = 66,405.20/x
  3. Step 3: Cross multiply
    201,371.43x = 301,992.59 × 66,405.20
  4. Step 4: Simplify right side
    201,371.43x = 20,053,876,495.48
  5. Step 5: Solve for x
    x = 20,053,876,495.48/201,371.43
  6. Step 6: Final answer
    x = 99,586.50

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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.