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Finding the Fourth Proportional to 21,534.60, 32,257.80 and 12,748.08

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Solution

The fourth proportional to 21,534.60, 32,257.80 and 12,748.08 is: 19,096.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,534.60 : 32,257.80 = 12,748.08 : x
  2. Step 2: Convert to fraction form
    21,534.60/32,257.80 = 12,748.08/x
  3. Step 3: Cross multiply
    21,534.60x = 32,257.80 × 12,748.08
  4. Step 4: Simplify right side
    21,534.60x = 411,225,015.02
  5. Step 5: Solve for x
    x = 411,225,015.02/21,534.60
  6. Step 6: Final answer
    x = 19,096.01

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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.