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Finding the Fourth Proportional to 392,187.40, 541,208.10 and 222,417.88

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Solution

The fourth proportional to 392,187.40, 541,208.10 and 222,417.88 is: 306,930.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,187.40 : 541,208.10 = 222,417.88 : x
  2. Step 2: Convert to fraction form
    392,187.40/541,208.10 = 222,417.88/x
  3. Step 3: Cross multiply
    392,187.40x = 541,208.10 × 222,417.88
  4. Step 4: Simplify right side
    392,187.40x = 120,374,355,534.79
  5. Step 5: Solve for x
    x = 120,374,355,534.79/392,187.40
  6. Step 6: Final answer
    x = 306,930.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.