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Finding the Fourth Proportional to 9,572.70, 13,209.39 and 5,380.86

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Solution

The fourth proportional to 9,572.70, 13,209.39 and 5,380.86 is: 7,425.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,572.70 : 13,209.39 = 5,380.86 : x
  2. Step 2: Convert to fraction form
    9,572.70/13,209.39 = 5,380.86/x
  3. Step 3: Cross multiply
    9,572.70x = 13,209.39 × 5,380.86
  4. Step 4: Simplify right side
    9,572.70x = 71,077,878.28
  5. Step 5: Solve for x
    x = 71,077,878.28/9,572.70
  6. Step 6: Final answer
    x = 7,425.06

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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.