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Finding the Fourth Proportional to 108,672.60, 163,008.90 and 45,481.80

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Solution

The fourth proportional to 108,672.60, 163,008.90 and 45,481.80 is: 68,222.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,672.60 : 163,008.90 = 45,481.80 : x
  2. Step 2: Convert to fraction form
    108,672.60/163,008.90 = 45,481.80/x
  3. Step 3: Cross multiply
    108,672.60x = 163,008.90 × 45,481.80
  4. Step 4: Simplify right side
    108,672.60x = 7,413,938,188.02
  5. Step 5: Solve for x
    x = 7,413,938,188.02/108,672.60
  6. Step 6: Final answer
    x = 68,222.70

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1.5x scale

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.