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Finding the Fourth Proportional to 307,620.80, 461,431.20 and 167,307.20

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Solution

The fourth proportional to 307,620.80, 461,431.20 and 167,307.20 is: 250,960.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,620.80 : 461,431.20 = 167,307.20 : x
  2. Step 2: Convert to fraction form
    307,620.80/461,431.20 = 167,307.20/x
  3. Step 3: Cross multiply
    307,620.80x = 461,431.20 × 167,307.20
  4. Step 4: Simplify right side
    307,620.80x = 77,200,762,064.64
  5. Step 5: Solve for x
    x = 77,200,762,064.64/307,620.80
  6. Step 6: Final answer
    x = 250,960.80

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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.