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Finding the Fourth Proportional to 484,172, 668,157.36 and 272,204

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Solution

The fourth proportional to 484,172, 668,157.36 and 272,204 is: 375,641.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,172 : 668,157.36 = 272,204 : x
  2. Step 2: Convert to fraction form
    484,172/668,157.36 = 272,204/x
  3. Step 3: Cross multiply
    484,172x = 668,157.36 × 272,204
  4. Step 4: Simplify right side
    484,172x = 181,875,106,021.44
  5. Step 5: Solve for x
    x = 181,875,106,021.44/484,172
  6. Step 6: Final answer
    x = 375,641.52

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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.