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Finding the Fourth Proportional to 393,907.17, 591,009.66 and 154,192.38

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Solution

The fourth proportional to 393,907.17, 591,009.66 and 154,192.38 is: 231,346.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,907.17 : 591,009.66 = 154,192.38 : x
  2. Step 2: Convert to fraction form
    393,907.17/591,009.66 = 154,192.38/x
  3. Step 3: Cross multiply
    393,907.17x = 591,009.66 × 154,192.38
  4. Step 4: Simplify right side
    393,907.17x = 91,129,186,078.39
  5. Step 5: Solve for x
    x = 91,129,186,078.39/393,907.17
  6. Step 6: Final answer
    x = 231,346.86

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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.