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Finding the Fourth Proportional to 86,491.81, 119,358.64 and 46,747.81

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Solution

The fourth proportional to 86,491.81, 119,358.64 and 46,747.81 is: 64,511.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,491.81 : 119,358.64 = 46,747.81 : x
  2. Step 2: Convert to fraction form
    86,491.81/119,358.64 = 46,747.81/x
  3. Step 3: Cross multiply
    86,491.81x = 119,358.64 × 46,747.81
  4. Step 4: Simplify right side
    86,491.81x = 5,579,755,024.58
  5. Step 5: Solve for x
    x = 5,579,755,024.58/86,491.81
  6. Step 6: Final answer
    x = 64,511.95

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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.