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Finding the Fourth Proportional to 9,475.45, 13,060.44 and 8,681.31

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Solution

The fourth proportional to 9,475.45, 13,060.44 and 8,681.31 is: 11,965.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,475.45 : 13,060.44 = 8,681.31 : x
  2. Step 2: Convert to fraction form
    9,475.45/13,060.44 = 8,681.31/x
  3. Step 3: Cross multiply
    9,475.45x = 13,060.44 × 8,681.31
  4. Step 4: Simplify right side
    9,475.45x = 113,381,728.38
  5. Step 5: Solve for x
    x = 113,381,728.38/9,475.45
  6. Step 6: Final answer
    x = 11,965.84

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Double scale
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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.