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Finding the Fourth Proportional to 353,529.51, 487,865.66 and 194,553.51

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Solution

The fourth proportional to 353,529.51, 487,865.66 and 194,553.51 is: 268,481.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,529.51 : 487,865.66 = 194,553.51 : x
  2. Step 2: Convert to fraction form
    353,529.51/487,865.66 = 194,553.51/x
  3. Step 3: Cross multiply
    353,529.51x = 487,865.66 × 194,553.51
  4. Step 4: Simplify right side
    353,529.51x = 94,915,975,588.70
  5. Step 5: Solve for x
    x = 94,915,975,588.70/353,529.51
  6. Step 6: Final answer
    x = 268,481.05

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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.