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Finding the Fourth Proportional to 16,912.40, 25,368.60 and 7,048.40

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Solution

The fourth proportional to 16,912.40, 25,368.60 and 7,048.40 is: 10,572.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,912.40 : 25,368.60 = 7,048.40 : x
  2. Step 2: Convert to fraction form
    16,912.40/25,368.60 = 7,048.40/x
  3. Step 3: Cross multiply
    16,912.40x = 25,368.60 × 7,048.40
  4. Step 4: Simplify right side
    16,912.40x = 178,808,040.24
  5. Step 5: Solve for x
    x = 178,808,040.24/16,912.40
  6. Step 6: Final answer
    x = 10,572.60

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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.