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Finding the Fourth Proportional to 411,554.70, 617,332.05 and 366,939.90

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Solution

The fourth proportional to 411,554.70, 617,332.05 and 366,939.90 is: 550,409.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,554.70 : 617,332.05 = 366,939.90 : x
  2. Step 2: Convert to fraction form
    411,554.70/617,332.05 = 366,939.90/x
  3. Step 3: Cross multiply
    411,554.70x = 617,332.05 × 366,939.90
  4. Step 4: Simplify right side
    411,554.70x = 226,523,760,693.80
  5. Step 5: Solve for x
    x = 226,523,760,693.80/411,554.70
  6. Step 6: Final answer
    x = 550,409.85

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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.