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Finding the Fourth Proportional to 104,092.80, 156,139.20 and 70,850.40

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Solution

The fourth proportional to 104,092.80, 156,139.20 and 70,850.40 is: 106,275.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,092.80 : 156,139.20 = 70,850.40 : x
  2. Step 2: Convert to fraction form
    104,092.80/156,139.20 = 70,850.40/x
  3. Step 3: Cross multiply
    104,092.80x = 156,139.20 × 70,850.40
  4. Step 4: Simplify right side
    104,092.80x = 11,062,524,775.68
  5. Step 5: Solve for x
    x = 11,062,524,775.68/104,092.80
  6. Step 6: Final answer
    x = 106,275.60

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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.