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Finding the Fourth Proportional to 19,635.80, 29,468.10 and 13,059.80

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Solution

The fourth proportional to 19,635.80, 29,468.10 and 13,059.80 is: 19,599.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,635.80 : 29,468.10 = 13,059.80 : x
  2. Step 2: Convert to fraction form
    19,635.80/29,468.10 = 13,059.80/x
  3. Step 3: Cross multiply
    19,635.80x = 29,468.10 × 13,059.80
  4. Step 4: Simplify right side
    19,635.80x = 384,847,492.38
  5. Step 5: Solve for x
    x = 384,847,492.38/19,635.80
  6. Step 6: Final answer
    x = 19,599.28

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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.