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Finding the Fourth Proportional to 22,912.60, 34,368.90 and 13,696.60

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Solution

The fourth proportional to 22,912.60, 34,368.90 and 13,696.60 is: 20,544.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,912.60 : 34,368.90 = 13,696.60 : x
  2. Step 2: Convert to fraction form
    22,912.60/34,368.90 = 13,696.60/x
  3. Step 3: Cross multiply
    22,912.60x = 34,368.90 × 13,696.60
  4. Step 4: Simplify right side
    22,912.60x = 470,737,075.74
  5. Step 5: Solve for x
    x = 470,737,075.74/22,912.60
  6. Step 6: Final answer
    x = 20,544.90

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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.