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Finding the Fourth Proportional to 19,573.20, 29,311.20 and 15,685.20

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Solution

The fourth proportional to 19,573.20, 29,311.20 and 15,685.20 is: 23,488.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,573.20 : 29,311.20 = 15,685.20 : x
  2. Step 2: Convert to fraction form
    19,573.20/29,311.20 = 15,685.20/x
  3. Step 3: Cross multiply
    19,573.20x = 29,311.20 × 15,685.20
  4. Step 4: Simplify right side
    19,573.20x = 459,752,034.24
  5. Step 5: Solve for x
    x = 459,752,034.24/19,573.20
  6. Step 6: Final answer
    x = 23,488.85

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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.