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Finding the Fourth Proportional to 7,010.45, 9,654.74 and 6,857.36

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Solution

The fourth proportional to 7,010.45, 9,654.74 and 6,857.36 is: 9,443.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,010.45 : 9,654.74 = 6,857.36 : x
  2. Step 2: Convert to fraction form
    7,010.45/9,654.74 = 6,857.36/x
  3. Step 3: Cross multiply
    7,010.45x = 9,654.74 × 6,857.36
  4. Step 4: Simplify right side
    7,010.45x = 66,206,034.40
  5. Step 5: Solve for x
    x = 66,206,034.40/7,010.45
  6. Step 6: Final answer
    x = 9,443.90

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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.