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Finding the Fourth Proportional to 86,508.94, 119,389.62 and 48,790.48

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Solution

The fourth proportional to 86,508.94, 119,389.62 and 48,790.48 is: 67,334.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,508.94 : 119,389.62 = 48,790.48 : x
  2. Step 2: Convert to fraction form
    86,508.94/119,389.62 = 48,790.48/x
  3. Step 3: Cross multiply
    86,508.94x = 119,389.62 × 48,790.48
  4. Step 4: Simplify right side
    86,508.94x = 5,825,076,751.31
  5. Step 5: Solve for x
    x = 5,825,076,751.31/86,508.94
  6. Step 6: Final answer
    x = 67,334.97

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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.