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Finding the Fourth Proportional to 393,358.88, 590,023.14 and 112,876.13

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Solution

The fourth proportional to 393,358.88, 590,023.14 and 112,876.13 is: 169,309.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,358.88 : 590,023.14 = 112,876.13 : x
  2. Step 2: Convert to fraction form
    393,358.88/590,023.14 = 112,876.13/x
  3. Step 3: Cross multiply
    393,358.88x = 590,023.14 × 112,876.13
  4. Step 4: Simplify right side
    393,358.88x = 66,599,529,705.42
  5. Step 5: Solve for x
    x = 66,599,529,705.42/393,358.88
  6. Step 6: Final answer
    x = 169,309.84

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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.