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Finding the Fourth Proportional to 16,387.82, 22,615.16 and 8,935.82

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Solution

The fourth proportional to 16,387.82, 22,615.16 and 8,935.82 is: 12,331.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,387.82 : 22,615.16 = 8,935.82 : x
  2. Step 2: Convert to fraction form
    16,387.82/22,615.16 = 8,935.82/x
  3. Step 3: Cross multiply
    16,387.82x = 22,615.16 × 8,935.82
  4. Step 4: Simplify right side
    16,387.82x = 202,084,841.28
  5. Step 5: Solve for x
    x = 202,084,841.28/16,387.82
  6. Step 6: Final answer
    x = 12,331.41

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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.