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Finding the Fourth Proportional to 106,392.81, 146,823.09 and 58,647.87

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Solution

The fourth proportional to 106,392.81, 146,823.09 and 58,647.87 is: 80,934.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,392.81 : 146,823.09 = 58,647.87 : x
  2. Step 2: Convert to fraction form
    106,392.81/146,823.09 = 58,647.87/x
  3. Step 3: Cross multiply
    106,392.81x = 146,823.09 × 58,647.87
  4. Step 4: Simplify right side
    106,392.81x = 8,610,861,495.32
  5. Step 5: Solve for x
    x = 8,610,861,495.32/106,392.81
  6. Step 6: Final answer
    x = 80,934.62

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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.