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Finding the Fourth Proportional to 483,614.67, 725,421.06 and 128,629.08

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Solution

The fourth proportional to 483,614.67, 725,421.06 and 128,629.08 is: 192,943.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,614.67 : 725,421.06 = 128,629.08 : x
  2. Step 2: Convert to fraction form
    483,614.67/725,421.06 = 128,629.08/x
  3. Step 3: Cross multiply
    483,614.67x = 725,421.06 × 128,629.08
  4. Step 4: Simplify right side
    483,614.67x = 93,310,243,560.42
  5. Step 5: Solve for x
    x = 93,310,243,560.42/483,614.67
  6. Step 6: Final answer
    x = 192,943.37

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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.