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Finding the Fourth Proportional to 9,191.43, 12,678.93 and 5,652.14

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Solution

The fourth proportional to 9,191.43, 12,678.93 and 5,652.14 is: 7,796.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,191.43 : 12,678.93 = 5,652.14 : x
  2. Step 2: Convert to fraction form
    9,191.43/12,678.93 = 5,652.14/x
  3. Step 3: Cross multiply
    9,191.43x = 12,678.93 × 5,652.14
  4. Step 4: Simplify right side
    9,191.43x = 71,663,087.41
  5. Step 5: Solve for x
    x = 71,663,087.41/9,191.43
  6. Step 6: Final answer
    x = 7,796.73

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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.