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Finding the Fourth Proportional to 19,327.60, 28,969.80 and 8,232.40

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Solution

The fourth proportional to 19,327.60, 28,969.80 and 8,232.40 is: 12,339.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,327.60 : 28,969.80 = 8,232.40 : x
  2. Step 2: Convert to fraction form
    19,327.60/28,969.80 = 8,232.40/x
  3. Step 3: Cross multiply
    19,327.60x = 28,969.80 × 8,232.40
  4. Step 4: Simplify right side
    19,327.60x = 238,490,981.52
  5. Step 5: Solve for x
    x = 238,490,981.52/19,327.60
  6. Step 6: Final answer
    x = 12,339.40

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.