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Finding the Fourth Proportional to 23,007.40, 34,515.90 and 13,138.60

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Solution

The fourth proportional to 23,007.40, 34,515.90 and 13,138.60 is: 19,710.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,007.40 : 34,515.90 = 13,138.60 : x
  2. Step 2: Convert to fraction form
    23,007.40/34,515.90 = 13,138.60/x
  3. Step 3: Cross multiply
    23,007.40x = 34,515.90 × 13,138.60
  4. Step 4: Simplify right side
    23,007.40x = 453,490,603.74
  5. Step 5: Solve for x
    x = 453,490,603.74/23,007.40
  6. Step 6: Final answer
    x = 19,710.64

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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.