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Finding the Fourth Proportional to 14,704.90, 20,638.70 and 14,704.90

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Solution

The fourth proportional to 14,704.90, 20,638.70 and 14,704.90 is: 20,638.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,704.90 : 20,638.70 = 14,704.90 : x
  2. Step 2: Convert to fraction form
    14,704.90/20,638.70 = 14,704.90/x
  3. Step 3: Cross multiply
    14,704.90x = 20,638.70 × 14,704.90
  4. Step 4: Simplify right side
    14,704.90x = 303,490,019.63
  5. Step 5: Solve for x
    x = 303,490,019.63/14,704.90
  6. Step 6: Final answer
    x = 20,638.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.