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Finding the Fourth Proportional to 14,617.02, 20,170 and 8,647.52

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Solution

The fourth proportional to 14,617.02, 20,170 and 8,647.52 is: 11,932.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,617.02 : 20,170 = 8,647.52 : x
  2. Step 2: Convert to fraction form
    14,617.02/20,170 = 8,647.52/x
  3. Step 3: Cross multiply
    14,617.02x = 20,170 × 8,647.52
  4. Step 4: Simplify right side
    14,617.02x = 174,420,478.40
  5. Step 5: Solve for x
    x = 174,420,478.40/14,617.02
  6. Step 6: Final answer
    x = 11,932.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.