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Finding the Fourth Proportional to 15,028.56, 20,748.86 and 9,653.17

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Solution

The fourth proportional to 15,028.56, 20,748.86 and 9,653.17 is: 13,327.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,028.56 : 20,748.86 = 9,653.17 : x
  2. Step 2: Convert to fraction form
    15,028.56/20,748.86 = 9,653.17/x
  3. Step 3: Cross multiply
    15,028.56x = 20,748.86 × 9,653.17
  4. Step 4: Simplify right side
    15,028.56x = 200,292,272.89
  5. Step 5: Solve for x
    x = 200,292,272.89/15,028.56
  6. Step 6: Final answer
    x = 13,327.44

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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.