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Finding the Fourth Proportional to 105,549.92, 158,324.64 and 43,220.48

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Solution

The fourth proportional to 105,549.92, 158,324.64 and 43,220.48 is: 64,830.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,549.92 : 158,324.64 = 43,220.48 : x
  2. Step 2: Convert to fraction form
    105,549.92/158,324.64 = 43,220.48/x
  3. Step 3: Cross multiply
    105,549.92x = 158,324.64 × 43,220.48
  4. Step 4: Simplify right side
    105,549.92x = 6,842,866,936.63
  5. Step 5: Solve for x
    x = 6,842,866,936.63/105,549.92
  6. Step 6: Final answer
    x = 64,830.62

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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.