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Finding the Fourth Proportional to 307,712.40, 461,698.20 and 167,571.60

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Solution

The fourth proportional to 307,712.40, 461,698.20 and 167,571.60 is: 251,427.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,712.40 : 461,698.20 = 167,571.60 : x
  2. Step 2: Convert to fraction form
    307,712.40/461,698.20 = 167,571.60/x
  3. Step 3: Cross multiply
    307,712.40x = 461,698.20 × 167,571.60
  4. Step 4: Simplify right side
    307,712.40x = 77,367,506,091.12
  5. Step 5: Solve for x
    x = 77,367,506,091.12/307,712.40
  6. Step 6: Final answer
    x = 251,427.98

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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.