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Finding the Fourth Proportional to 25,693.60, 38,540.40 and 16,938.40

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Solution

The fourth proportional to 25,693.60, 38,540.40 and 16,938.40 is: 25,407.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,693.60 : 38,540.40 = 16,938.40 : x
  2. Step 2: Convert to fraction form
    25,693.60/38,540.40 = 16,938.40/x
  3. Step 3: Cross multiply
    25,693.60x = 38,540.40 × 16,938.40
  4. Step 4: Simplify right side
    25,693.60x = 652,812,711.36
  5. Step 5: Solve for x
    x = 652,812,711.36/25,693.60
  6. Step 6: Final answer
    x = 25,407.60

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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.