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Finding the Fourth Proportional to 339,487.81, 468,491.61 and 186,535.46

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Solution

The fourth proportional to 339,487.81, 468,491.61 and 186,535.46 is: 257,418.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,487.81 : 468,491.61 = 186,535.46 : x
  2. Step 2: Convert to fraction form
    339,487.81/468,491.61 = 186,535.46/x
  3. Step 3: Cross multiply
    339,487.81x = 468,491.61 × 186,535.46
  4. Step 4: Simplify right side
    339,487.81x = 87,390,297,977.49
  5. Step 5: Solve for x
    x = 87,390,297,977.49/339,487.81
  6. Step 6: Final answer
    x = 257,418.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.