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Finding the Fourth Proportional to 9,957.31, 13,742.92 and 5,765.56

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Solution

The fourth proportional to 9,957.31, 13,742.92 and 5,765.56 is: 7,957.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,957.31 : 13,742.92 = 5,765.56 : x
  2. Step 2: Convert to fraction form
    9,957.31/13,742.92 = 5,765.56/x
  3. Step 3: Cross multiply
    9,957.31x = 13,742.92 × 5,765.56
  4. Step 4: Simplify right side
    9,957.31x = 79,235,629.84
  5. Step 5: Solve for x
    x = 79,235,629.84/9,957.31
  6. Step 6: Final answer
    x = 7,957.53

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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.