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Finding the Fourth Proportional to 16,912.60, 25,368.90 and 7,051.78

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Solution

The fourth proportional to 16,912.60, 25,368.90 and 7,051.78 is: 10,577.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,912.60 : 25,368.90 = 7,051.78 : x
  2. Step 2: Convert to fraction form
    16,912.60/25,368.90 = 7,051.78/x
  3. Step 3: Cross multiply
    16,912.60x = 25,368.90 × 7,051.78
  4. Step 4: Simplify right side
    16,912.60x = 178,895,901.64
  5. Step 5: Solve for x
    x = 178,895,901.64/16,912.60
  6. Step 6: Final answer
    x = 10,577.67

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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.