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Finding the Fourth Proportional to 112,061.60, 167,919.60 and 97,200.80

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Solution

The fourth proportional to 112,061.60, 167,919.60 and 97,200.80 is: 145,651.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,061.60 : 167,919.60 = 97,200.80 : x
  2. Step 2: Convert to fraction form
    112,061.60/167,919.60 = 97,200.80/x
  3. Step 3: Cross multiply
    112,061.60x = 167,919.60 × 97,200.80
  4. Step 4: Simplify right side
    112,061.60x = 16,321,919,455.68
  5. Step 5: Solve for x
    x = 16,321,919,455.68/112,061.60
  6. Step 6: Final answer
    x = 145,651.32

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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.