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Finding the Fourth Proportional to 13,908.66, 20,865.15 and 4,672.50

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Solution

The fourth proportional to 13,908.66, 20,865.15 and 4,672.50 is: 7,009.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,908.66 : 20,865.15 = 4,672.50 : x
  2. Step 2: Convert to fraction form
    13,908.66/20,865.15 = 4,672.50/x
  3. Step 3: Cross multiply
    13,908.66x = 20,865.15 × 4,672.50
  4. Step 4: Simplify right side
    13,908.66x = 97,492,413.38
  5. Step 5: Solve for x
    x = 97,492,413.38/13,908.66
  6. Step 6: Final answer
    x = 7,009.48

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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.