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Finding the Fourth Proportional to 108,524.30, 162,786.45 and 66,533.90

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Solution

The fourth proportional to 108,524.30, 162,786.45 and 66,533.90 is: 99,800.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,524.30 : 162,786.45 = 66,533.90 : x
  2. Step 2: Convert to fraction form
    108,524.30/162,786.45 = 66,533.90/x
  3. Step 3: Cross multiply
    108,524.30x = 162,786.45 × 66,533.90
  4. Step 4: Simplify right side
    108,524.30x = 10,830,817,385.66
  5. Step 5: Solve for x
    x = 10,830,817,385.66/108,524.30
  6. Step 6: Final answer
    x = 99,800.85

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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.