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Finding the Fourth Proportional to 22,293.88, 30,768.90 and 13,341.64

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Solution

The fourth proportional to 22,293.88, 30,768.90 and 13,341.64 is: 18,413.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,293.88 : 30,768.90 = 13,341.64 : x
  2. Step 2: Convert to fraction form
    22,293.88/30,768.90 = 13,341.64/x
  3. Step 3: Cross multiply
    22,293.88x = 30,768.90 × 13,341.64
  4. Step 4: Simplify right side
    22,293.88x = 410,507,587.00
  5. Step 5: Solve for x
    x = 410,507,587.00/22,293.88
  6. Step 6: Final answer
    x = 18,413.47

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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.