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Finding the Fourth Proportional to 17,172.40, 25,755.50 and 6,079.20

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Solution

The fourth proportional to 17,172.40, 25,755.50 and 6,079.20 is: 9,117.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,172.40 : 25,755.50 = 6,079.20 : x
  2. Step 2: Convert to fraction form
    17,172.40/25,755.50 = 6,079.20/x
  3. Step 3: Cross multiply
    17,172.40x = 25,755.50 × 6,079.20
  4. Step 4: Simplify right side
    17,172.40x = 156,572,835.60
  5. Step 5: Solve for x
    x = 156,572,835.60/17,172.40
  6. Step 6: Final answer
    x = 9,117.70

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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.