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Finding the Fourth Proportional to 16,672.20, 25,004.70 and 7,312.20

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Solution

The fourth proportional to 16,672.20, 25,004.70 and 7,312.20 is: 10,966.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,672.20 : 25,004.70 = 7,312.20 : x
  2. Step 2: Convert to fraction form
    16,672.20/25,004.70 = 7,312.20/x
  3. Step 3: Cross multiply
    16,672.20x = 25,004.70 × 7,312.20
  4. Step 4: Simplify right side
    16,672.20x = 182,839,367.34
  5. Step 5: Solve for x
    x = 182,839,367.34/16,672.20
  6. Step 6: Final answer
    x = 10,966.72

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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.