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Finding the Fourth Proportional to 108,702.20, 163,053.30 and 95,871.80

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Solution

The fourth proportional to 108,702.20, 163,053.30 and 95,871.80 is: 143,807.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,702.20 : 163,053.30 = 95,871.80 : x
  2. Step 2: Convert to fraction form
    108,702.20/163,053.30 = 95,871.80/x
  3. Step 3: Cross multiply
    108,702.20x = 163,053.30 × 95,871.80
  4. Step 4: Simplify right side
    108,702.20x = 15,632,213,366.94
  5. Step 5: Solve for x
    x = 15,632,213,366.94/108,702.20
  6. Step 6: Final answer
    x = 143,807.70

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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.