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Finding the Fourth Proportional to 397,356.56, 548,349.06 and 216,068.60

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Solution

The fourth proportional to 397,356.56, 548,349.06 and 216,068.60 is: 298,173.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,356.56 : 548,349.06 = 216,068.60 : x
  2. Step 2: Convert to fraction form
    397,356.56/548,349.06 = 216,068.60/x
  3. Step 3: Cross multiply
    397,356.56x = 548,349.06 × 216,068.60
  4. Step 4: Simplify right side
    397,356.56x = 118,481,013,705.52
  5. Step 5: Solve for x
    x = 118,481,013,705.52/397,356.56
  6. Step 6: Final answer
    x = 298,173.04

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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.