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Finding the Fourth Proportional to 112,060.40, 168,090.60 and 80,567.60

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Solution

The fourth proportional to 112,060.40, 168,090.60 and 80,567.60 is: 120,851.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,060.40 : 168,090.60 = 80,567.60 : x
  2. Step 2: Convert to fraction form
    112,060.40/168,090.60 = 80,567.60/x
  3. Step 3: Cross multiply
    112,060.40x = 168,090.60 × 80,567.60
  4. Step 4: Simplify right side
    112,060.40x = 13,542,656,224.56
  5. Step 5: Solve for x
    x = 13,542,656,224.56/112,060.40
  6. Step 6: Final answer
    x = 120,851.40

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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.