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Finding the Fourth Proportional to 447,939.99, 671,506.61 and 163,431.95

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Solution

The fourth proportional to 447,939.99, 671,506.61 and 163,431.95 is: 245,000.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,939.99 : 671,506.61 = 163,431.95 : x
  2. Step 2: Convert to fraction form
    447,939.99/671,506.61 = 163,431.95/x
  3. Step 3: Cross multiply
    447,939.99x = 671,506.61 × 163,431.95
  4. Step 4: Simplify right side
    447,939.99x = 109,745,630,535.50
  5. Step 5: Solve for x
    x = 109,745,630,535.50/447,939.99
  6. Step 6: Final answer
    x = 245,000.74

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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.