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Finding the Fourth Proportional to 16,381.13, 22,605.98 and 8,929.13

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Solution

The fourth proportional to 16,381.13, 22,605.98 and 8,929.13 is: 12,322.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,381.13 : 22,605.98 = 8,929.13 : x
  2. Step 2: Convert to fraction form
    16,381.13/22,605.98 = 8,929.13/x
  3. Step 3: Cross multiply
    16,381.13x = 22,605.98 × 8,929.13
  4. Step 4: Simplify right side
    16,381.13x = 201,851,576.52
  5. Step 5: Solve for x
    x = 201,851,576.52/16,381.13
  6. Step 6: Final answer
    x = 12,322.20

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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.