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Finding the Fourth Proportional to 124,977, 187,491.42 and 51,105

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Solution

The fourth proportional to 124,977, 187,491.42 and 51,105 is: 76,668.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,977 : 187,491.42 = 51,105 : x
  2. Step 2: Convert to fraction form
    124,977/187,491.42 = 51,105/x
  3. Step 3: Cross multiply
    124,977x = 187,491.42 × 51,105
  4. Step 4: Simplify right side
    124,977x = 9,581,749,019.10
  5. Step 5: Solve for x
    x = 9,581,749,019.10/124,977
  6. Step 6: Final answer
    x = 76,668.10

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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.