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Finding the Fourth Proportional to 17,074.90, 25,612.35 and 13,618.90

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Solution

The fourth proportional to 17,074.90, 25,612.35 and 13,618.90 is: 20,428.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,074.90 : 25,612.35 = 13,618.90 : x
  2. Step 2: Convert to fraction form
    17,074.90/25,612.35 = 13,618.90/x
  3. Step 3: Cross multiply
    17,074.90x = 25,612.35 × 13,618.90
  4. Step 4: Simplify right side
    17,074.90x = 348,812,033.42
  5. Step 5: Solve for x
    x = 348,812,033.42/17,074.90
  6. Step 6: Final answer
    x = 20,428.35

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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.