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Finding the Fourth Proportional to 163,048.40, 244,451.10 and 84,219.20

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Solution

The fourth proportional to 163,048.40, 244,451.10 and 84,219.20 is: 126,266.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,048.40 : 244,451.10 = 84,219.20 : x
  2. Step 2: Convert to fraction form
    163,048.40/244,451.10 = 84,219.20/x
  3. Step 3: Cross multiply
    163,048.40x = 244,451.10 × 84,219.20
  4. Step 4: Simplify right side
    163,048.40x = 20,587,476,081.12
  5. Step 5: Solve for x
    x = 20,587,476,081.12/163,048.40
  6. Step 6: Final answer
    x = 126,266.04

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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.