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Finding the Fourth Proportional to 16,990.62, 25,492.68 and 7,628.10

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Solution

The fourth proportional to 16,990.62, 25,492.68 and 7,628.10 is: 11,445.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,990.62 : 25,492.68 = 7,628.10 : x
  2. Step 2: Convert to fraction form
    16,990.62/25,492.68 = 7,628.10/x
  3. Step 3: Cross multiply
    16,990.62x = 25,492.68 × 7,628.10
  4. Step 4: Simplify right side
    16,990.62x = 194,460,712.31
  5. Step 5: Solve for x
    x = 194,460,712.31/16,990.62
  6. Step 6: Final answer
    x = 11,445.18

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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.