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Finding the Fourth Proportional to 201,586.60, 302,315.43 and 66,625.48

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Solution

The fourth proportional to 201,586.60, 302,315.43 and 66,625.48 is: 99,916.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,586.60 : 302,315.43 = 66,625.48 : x
  2. Step 2: Convert to fraction form
    201,586.60/302,315.43 = 66,625.48/x
  3. Step 3: Cross multiply
    201,586.60x = 302,315.43 × 66,625.48
  4. Step 4: Simplify right side
    201,586.60x = 20,141,910,635.16
  5. Step 5: Solve for x
    x = 20,141,910,635.16/201,586.60
  6. Step 6: Final answer
    x = 99,916.91

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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.