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Finding the Fourth Proportional to 19,672.74, 29,509.47 and 5,821.74

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Solution

The fourth proportional to 19,672.74, 29,509.47 and 5,821.74 is: 8,732.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,672.74 : 29,509.47 = 5,821.74 : x
  2. Step 2: Convert to fraction form
    19,672.74/29,509.47 = 5,821.74/x
  3. Step 3: Cross multiply
    19,672.74x = 29,509.47 × 5,821.74
  4. Step 4: Simplify right side
    19,672.74x = 171,796,461.88
  5. Step 5: Solve for x
    x = 171,796,461.88/19,672.74
  6. Step 6: Final answer
    x = 8,732.72

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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.