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Finding the Fourth Proportional to 10,675.40, 15,992.70 and 5,743.40

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Solution

The fourth proportional to 10,675.40, 15,992.70 and 5,743.40 is: 8,604.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,675.40 : 15,992.70 = 5,743.40 : x
  2. Step 2: Convert to fraction form
    10,675.40/15,992.70 = 5,743.40/x
  3. Step 3: Cross multiply
    10,675.40x = 15,992.70 × 5,743.40
  4. Step 4: Simplify right side
    10,675.40x = 91,852,473.18
  5. Step 5: Solve for x
    x = 91,852,473.18/10,675.40
  6. Step 6: Final answer
    x = 8,604.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.