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Finding the Fourth Proportional to 7,036.48, 9,709.94 and 3,892.48

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Solution

The fourth proportional to 7,036.48, 9,709.94 and 3,892.48 is: 5,371.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,036.48 : 9,709.94 = 3,892.48 : x
  2. Step 2: Convert to fraction form
    7,036.48/9,709.94 = 3,892.48/x
  3. Step 3: Cross multiply
    7,036.48x = 9,709.94 × 3,892.48
  4. Step 4: Simplify right side
    7,036.48x = 37,795,747.25
  5. Step 5: Solve for x
    x = 37,795,747.25/7,036.48
  6. Step 6: Final answer
    x = 5,371.40

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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.