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Finding the Fourth Proportional to 447,830.56, 617,998.80 and 246,645.28

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Solution

The fourth proportional to 447,830.56, 617,998.80 and 246,645.28 is: 340,366.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,830.56 : 617,998.80 = 246,645.28 : x
  2. Step 2: Convert to fraction form
    447,830.56/617,998.80 = 246,645.28/x
  3. Step 3: Cross multiply
    447,830.56x = 617,998.80 × 246,645.28
  4. Step 4: Simplify right side
    447,830.56x = 152,426,487,065.66
  5. Step 5: Solve for x
    x = 152,426,487,065.66/447,830.56
  6. Step 6: Final answer
    x = 340,366.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.