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Finding the Fourth Proportional to 447,699.12, 671,621.62 and 132,187.92

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Solution

The fourth proportional to 447,699.12, 671,621.62 and 132,187.92 is: 198,303.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,699.12 : 671,621.62 = 132,187.92 : x
  2. Step 2: Convert to fraction form
    447,699.12/671,621.62 = 132,187.92/x
  3. Step 3: Cross multiply
    447,699.12x = 671,621.62 × 132,187.92
  4. Step 4: Simplify right side
    447,699.12x = 88,780,264,974.83
  5. Step 5: Solve for x
    x = 88,780,264,974.83/447,699.12
  6. Step 6: Final answer
    x = 198,303.42

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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.