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Finding the Fourth Proportional to 19,203.89, 28,814.03 and 7,361.18

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Solution

The fourth proportional to 19,203.89, 28,814.03 and 7,361.18 is: 11,044.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,203.89 : 28,814.03 = 7,361.18 : x
  2. Step 2: Convert to fraction form
    19,203.89/28,814.03 = 7,361.18/x
  3. Step 3: Cross multiply
    19,203.89x = 28,814.03 × 7,361.18
  4. Step 4: Simplify right side
    19,203.89x = 212,105,216.14
  5. Step 5: Solve for x
    x = 212,105,216.14/19,203.89
  6. Step 6: Final answer
    x = 11,044.91

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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.