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Finding the Fourth Proportional to 19,266.60, 28,899.90 and 7,573.80

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Solution

The fourth proportional to 19,266.60, 28,899.90 and 7,573.80 is: 11,360.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,266.60 : 28,899.90 = 7,573.80 : x
  2. Step 2: Convert to fraction form
    19,266.60/28,899.90 = 7,573.80/x
  3. Step 3: Cross multiply
    19,266.60x = 28,899.90 × 7,573.80
  4. Step 4: Simplify right side
    19,266.60x = 218,882,062.62
  5. Step 5: Solve for x
    x = 218,882,062.62/19,266.60
  6. Step 6: Final answer
    x = 11,360.70

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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.