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Finding the Fourth Proportional to 19,266.80, 28,900.20 and 14,892.80

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Solution

The fourth proportional to 19,266.80, 28,900.20 and 14,892.80 is: 22,339.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,266.80 : 28,900.20 = 14,892.80 : x
  2. Step 2: Convert to fraction form
    19,266.80/28,900.20 = 14,892.80/x
  3. Step 3: Cross multiply
    19,266.80x = 28,900.20 × 14,892.80
  4. Step 4: Simplify right side
    19,266.80x = 430,404,898.56
  5. Step 5: Solve for x
    x = 430,404,898.56/19,266.80
  6. Step 6: Final answer
    x = 22,339.20

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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.