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Finding the Fourth Proportional to 16,413.21, 22,649.94 and 9,339.48

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Solution

The fourth proportional to 16,413.21, 22,649.94 and 9,339.48 is: 12,888.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,413.21 : 22,649.94 = 9,339.48 : x
  2. Step 2: Convert to fraction form
    16,413.21/22,649.94 = 9,339.48/x
  3. Step 3: Cross multiply
    16,413.21x = 22,649.94 × 9,339.48
  4. Step 4: Simplify right side
    16,413.21x = 211,538,661.63
  5. Step 5: Solve for x
    x = 211,538,661.63/16,413.21
  6. Step 6: Final answer
    x = 12,888.32

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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.