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Finding the Fourth Proportional to 7,103.82, 10,655.76 and 1,909.68

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Solution

The fourth proportional to 7,103.82, 10,655.76 and 1,909.68 is: 2,864.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,103.82 : 10,655.76 = 1,909.68 : x
  2. Step 2: Convert to fraction form
    7,103.82/10,655.76 = 1,909.68/x
  3. Step 3: Cross multiply
    7,103.82x = 10,655.76 × 1,909.68
  4. Step 4: Simplify right side
    7,103.82x = 20,349,091.76
  5. Step 5: Solve for x
    x = 20,349,091.76/7,103.82
  6. Step 6: Final answer
    x = 2,864.53

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