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Finding the Fourth Proportional to 19,614.88, 29,405.78 and 8,513.21

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Solution

The fourth proportional to 19,614.88, 29,405.78 and 8,513.21 is: 12,762.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,614.88 : 29,405.78 = 8,513.21 : x
  2. Step 2: Convert to fraction form
    19,614.88/29,405.78 = 8,513.21/x
  3. Step 3: Cross multiply
    19,614.88x = 29,405.78 × 8,513.21
  4. Step 4: Simplify right side
    19,614.88x = 250,337,580.35
  5. Step 5: Solve for x
    x = 250,337,580.35/19,614.88
  6. Step 6: Final answer
    x = 12,762.64

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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.