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Finding the Fourth Proportional to 372,511.80, 558,563.58 and 147,644.46

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Solution

The fourth proportional to 372,511.80, 558,563.58 and 147,644.46 is: 221,385.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,511.80 : 558,563.58 = 147,644.46 : x
  2. Step 2: Convert to fraction form
    372,511.80/558,563.58 = 147,644.46/x
  3. Step 3: Cross multiply
    372,511.80x = 558,563.58 × 147,644.46
  4. Step 4: Simplify right side
    372,511.80x = 82,468,818,144.77
  5. Step 5: Solve for x
    x = 82,468,818,144.77/372,511.80
  6. Step 6: Final answer
    x = 221,385.79

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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.