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Finding the Fourth Proportional to 14,140.88, 21,191.26 and 10,413.88

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Solution

The fourth proportional to 14,140.88, 21,191.26 and 10,413.88 is: 15,606.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,140.88 : 21,191.26 = 10,413.88 : x
  2. Step 2: Convert to fraction form
    14,140.88/21,191.26 = 10,413.88/x
  3. Step 3: Cross multiply
    14,140.88x = 21,191.26 × 10,413.88
  4. Step 4: Simplify right side
    14,140.88x = 220,683,238.69
  5. Step 5: Solve for x
    x = 220,683,238.69/14,140.88
  6. Step 6: Final answer
    x = 15,606.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.