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Finding the Fourth Proportional to 10,954.20, 16,435.35 and 10,549.20

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Solution

The fourth proportional to 10,954.20, 16,435.35 and 10,549.20 is: 15,827.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,954.20 : 16,435.35 = 10,549.20 : x
  2. Step 2: Convert to fraction form
    10,954.20/16,435.35 = 10,549.20/x
  3. Step 3: Cross multiply
    10,954.20x = 16,435.35 × 10,549.20
  4. Step 4: Simplify right side
    10,954.20x = 173,379,794.22
  5. Step 5: Solve for x
    x = 173,379,794.22/10,954.20
  6. Step 6: Final answer
    x = 15,827.70

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1.5x scale

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.