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Finding the Fourth Proportional to 22,912.60, 34,368.90 and 11,219.80

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Solution

The fourth proportional to 22,912.60, 34,368.90 and 11,219.80 is: 16,829.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,912.60 : 34,368.90 = 11,219.80 : x
  2. Step 2: Convert to fraction form
    22,912.60/34,368.90 = 11,219.80/x
  3. Step 3: Cross multiply
    22,912.60x = 34,368.90 × 11,219.80
  4. Step 4: Simplify right side
    22,912.60x = 385,612,184.22
  5. Step 5: Solve for x
    x = 385,612,184.22/22,912.60
  6. Step 6: Final answer
    x = 16,829.70

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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.