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Finding the Fourth Proportional to 19,392.85, 29,090.94 and 5,352.88

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Solution

The fourth proportional to 19,392.85, 29,090.94 and 5,352.88 is: 8,029.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,392.85 : 29,090.94 = 5,352.88 : x
  2. Step 2: Convert to fraction form
    19,392.85/29,090.94 = 5,352.88/x
  3. Step 3: Cross multiply
    19,392.85x = 29,090.94 × 5,352.88
  4. Step 4: Simplify right side
    19,392.85x = 155,720,312.80
  5. Step 5: Solve for x
    x = 155,720,312.80/19,392.85
  6. Step 6: Final answer
    x = 8,029.78

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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.