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Finding the Fourth Proportional to 11,161.80, 16,596.09 and 10,870.20

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Solution

The fourth proportional to 11,161.80, 16,596.09 and 10,870.20 is: 16,162.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,161.80 : 16,596.09 = 10,870.20 : x
  2. Step 2: Convert to fraction form
    11,161.80/16,596.09 = 10,870.20/x
  3. Step 3: Cross multiply
    11,161.80x = 16,596.09 × 10,870.20
  4. Step 4: Simplify right side
    11,161.80x = 180,402,817.52
  5. Step 5: Solve for x
    x = 180,402,817.52/11,161.80
  6. Step 6: Final answer
    x = 16,162.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.