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Finding the Fourth Proportional to 16,806.30, 25,209.45 and 15,539.10

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Solution

The fourth proportional to 16,806.30, 25,209.45 and 15,539.10 is: 23,308.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,806.30 : 25,209.45 = 15,539.10 : x
  2. Step 2: Convert to fraction form
    16,806.30/25,209.45 = 15,539.10/x
  3. Step 3: Cross multiply
    16,806.30x = 25,209.45 × 15,539.10
  4. Step 4: Simplify right side
    16,806.30x = 391,732,164.50
  5. Step 5: Solve for x
    x = 391,732,164.50/16,806.30
  6. Step 6: Final answer
    x = 23,308.65

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Half scale
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Double scale
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Similar ratio
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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.