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Finding the Fourth Proportional to 19,551.60, 29,327.40 and 6,405.30

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Solution

The fourth proportional to 19,551.60, 29,327.40 and 6,405.30 is: 9,607.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,551.60 : 29,327.40 = 6,405.30 : x
  2. Step 2: Convert to fraction form
    19,551.60/29,327.40 = 6,405.30/x
  3. Step 3: Cross multiply
    19,551.60x = 29,327.40 × 6,405.30
  4. Step 4: Simplify right side
    19,551.60x = 187,850,795.22
  5. Step 5: Solve for x
    x = 187,850,795.22/19,551.60
  6. Step 6: Final answer
    x = 9,607.95

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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.