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Finding the Fourth Proportional to 19,885.53, 29,824.92 and 6,558.60

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Solution

The fourth proportional to 19,885.53, 29,824.92 and 6,558.60 is: 9,836.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,885.53 : 29,824.92 = 6,558.60 : x
  2. Step 2: Convert to fraction form
    19,885.53/29,824.92 = 6,558.60/x
  3. Step 3: Cross multiply
    19,885.53x = 29,824.92 × 6,558.60
  4. Step 4: Simplify right side
    19,885.53x = 195,609,720.31
  5. Step 5: Solve for x
    x = 195,609,720.31/19,885.53
  6. Step 6: Final answer
    x = 9,836.79

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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.