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Finding the Fourth Proportional to 15,172.32, 22,720.48 and 9,608.88

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Solution

The fourth proportional to 15,172.32, 22,720.48 and 9,608.88 is: 14,389.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,172.32 : 22,720.48 = 9,608.88 : x
  2. Step 2: Convert to fraction form
    15,172.32/22,720.48 = 9,608.88/x
  3. Step 3: Cross multiply
    15,172.32x = 22,720.48 × 9,608.88
  4. Step 4: Simplify right side
    15,172.32x = 218,318,365.86
  5. Step 5: Solve for x
    x = 218,318,365.86/15,172.32
  6. Step 6: Final answer
    x = 14,389.25

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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.