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Finding the Fourth Proportional to 6,539.84, 9,808.56 and 1,921.76

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Solution

The fourth proportional to 6,539.84, 9,808.56 and 1,921.76 is: 2,882.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,539.84 : 9,808.56 = 1,921.76 : x
  2. Step 2: Convert to fraction form
    6,539.84/9,808.56 = 1,921.76/x
  3. Step 3: Cross multiply
    6,539.84x = 9,808.56 × 1,921.76
  4. Step 4: Simplify right side
    6,539.84x = 18,849,698.27
  5. Step 5: Solve for x
    x = 18,849,698.27/6,539.84
  6. Step 6: Final answer
    x = 2,882.29

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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.