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Finding the Fourth Proportional to 17,005.28, 25,518.72 and 6,617.12

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Solution

The fourth proportional to 17,005.28, 25,518.72 and 6,617.12 is: 9,929.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,005.28 : 25,518.72 = 6,617.12 : x
  2. Step 2: Convert to fraction form
    17,005.28/25,518.72 = 6,617.12/x
  3. Step 3: Cross multiply
    17,005.28x = 25,518.72 × 6,617.12
  4. Step 4: Simplify right side
    17,005.28x = 168,860,432.49
  5. Step 5: Solve for x
    x = 168,860,432.49/17,005.28
  6. Step 6: Final answer
    x = 9,929.88

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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.