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Finding the Fourth Proportional to 9,962.76, 13,753.56 and 7,719.56

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Solution

The fourth proportional to 9,962.76, 13,753.56 and 7,719.56 is: 10,656.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,962.76 : 13,753.56 = 7,719.56 : x
  2. Step 2: Convert to fraction form
    9,962.76/13,753.56 = 7,719.56/x
  3. Step 3: Cross multiply
    9,962.76x = 13,753.56 × 7,719.56
  4. Step 4: Simplify right side
    9,962.76x = 106,171,431.63
  5. Step 5: Solve for x
    x = 106,171,431.63/9,962.76
  6. Step 6: Final answer
    x = 10,656.83

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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.