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Finding the Fourth Proportional to 372,661.80, 558,942.30 and 148,187.40

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Solution

The fourth proportional to 372,661.80, 558,942.30 and 148,187.40 is: 222,261.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,661.80 : 558,942.30 = 148,187.40 : x
  2. Step 2: Convert to fraction form
    372,661.80/558,942.30 = 148,187.40/x
  3. Step 3: Cross multiply
    372,661.80x = 558,942.30 × 148,187.40
  4. Step 4: Simplify right side
    372,661.80x = 82,828,206,187.02
  5. Step 5: Solve for x
    x = 82,828,206,187.02/372,661.80
  6. Step 6: Final answer
    x = 222,261.06

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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.