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Finding the Fourth Proportional to 3,809.76, 5,713.92 and 1,036.50

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Solution

The fourth proportional to 3,809.76, 5,713.92 and 1,036.50 is: 1,554.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,809.76 : 5,713.92 = 1,036.50 : x
  2. Step 2: Convert to fraction form
    3,809.76/5,713.92 = 1,036.50/x
  3. Step 3: Cross multiply
    3,809.76x = 5,713.92 × 1,036.50
  4. Step 4: Simplify right side
    3,809.76x = 5,922,478.08
  5. Step 5: Solve for x
    x = 5,922,478.08/3,809.76
  6. Step 6: Final answer
    x = 1,554.55

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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.