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Finding the Fourth Proportional to 408,786.66, 563,807.25 and 348,557.22

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Solution

The fourth proportional to 408,786.66, 563,807.25 and 348,557.22 is: 480,737.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,786.66 : 563,807.25 = 348,557.22 : x
  2. Step 2: Convert to fraction form
    408,786.66/563,807.25 = 348,557.22/x
  3. Step 3: Cross multiply
    408,786.66x = 563,807.25 × 348,557.22
  4. Step 4: Simplify right side
    408,786.66x = 196,519,087,675.85
  5. Step 5: Solve for x
    x = 196,519,087,675.85/408,786.66
  6. Step 6: Final answer
    x = 480,737.53

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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.