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Finding the Fourth Proportional to 393,713.06, 590,663.64 and 127,473.85

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Solution

The fourth proportional to 393,713.06, 590,663.64 and 127,473.85 is: 191,241.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,713.06 : 590,663.64 = 127,473.85 : x
  2. Step 2: Convert to fraction form
    393,713.06/590,663.64 = 127,473.85/x
  3. Step 3: Cross multiply
    393,713.06x = 590,663.64 × 127,473.85
  4. Step 4: Simplify right side
    393,713.06x = 75,294,169,462.17
  5. Step 5: Solve for x
    x = 75,294,169,462.17/393,713.06
  6. Step 6: Final answer
    x = 191,241.23

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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.