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Finding the Fourth Proportional to 168,013.20, 251,728.20 and 157,515.60

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Solution

The fourth proportional to 168,013.20, 251,728.20 and 157,515.60 is: 236,000.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,013.20 : 251,728.20 = 157,515.60 : x
  2. Step 2: Convert to fraction form
    168,013.20/251,728.20 = 157,515.60/x
  3. Step 3: Cross multiply
    168,013.20x = 251,728.20 × 157,515.60
  4. Step 4: Simplify right side
    168,013.20x = 39,651,118,459.92
  5. Step 5: Solve for x
    x = 39,651,118,459.92/168,013.20
  6. Step 6: Final answer
    x = 236,000.02

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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.