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Finding the Fourth Proportional to 14,413.50, 19,880.31 and 9,368.31

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Solution

The fourth proportional to 14,413.50, 19,880.31 and 9,368.31 is: 12,921.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,413.50 : 19,880.31 = 9,368.31 : x
  2. Step 2: Convert to fraction form
    14,413.50/19,880.31 = 9,368.31/x
  3. Step 3: Cross multiply
    14,413.50x = 19,880.31 × 9,368.31
  4. Step 4: Simplify right side
    14,413.50x = 186,244,906.98
  5. Step 5: Solve for x
    x = 186,244,906.98/14,413.50
  6. Step 6: Final answer
    x = 12,921.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.