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Finding the Fourth Proportional to 483,476.34, 725,147.55 and 128,519.22

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Solution

The fourth proportional to 483,476.34, 725,147.55 and 128,519.22 is: 192,761.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,476.34 : 725,147.55 = 128,519.22 : x
  2. Step 2: Convert to fraction form
    483,476.34/725,147.55 = 128,519.22/x
  3. Step 3: Cross multiply
    483,476.34x = 725,147.55 × 128,519.22
  4. Step 4: Simplify right side
    483,476.34x = 93,195,397,510.91
  5. Step 5: Solve for x
    x = 93,195,397,510.91/483,476.34
  6. Step 6: Final answer
    x = 192,761.03

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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.