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Finding the Fourth Proportional to 12,665.42, 19,005.42 and 4,874.84

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Solution

The fourth proportional to 12,665.42, 19,005.42 and 4,874.84 is: 7,315.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,665.42 : 19,005.42 = 4,874.84 : x
  2. Step 2: Convert to fraction form
    12,665.42/19,005.42 = 4,874.84/x
  3. Step 3: Cross multiply
    12,665.42x = 19,005.42 × 4,874.84
  4. Step 4: Simplify right side
    12,665.42x = 92,648,381.63
  5. Step 5: Solve for x
    x = 92,648,381.63/12,665.42
  6. Step 6: Final answer
    x = 7,315.07

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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.