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Finding the Fourth Proportional to 356,609.13, 535,579.92 and 313,929.69

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Solution

The fourth proportional to 356,609.13, 535,579.92 and 313,929.69 is: 471,481.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,609.13 : 535,579.92 = 313,929.69 : x
  2. Step 2: Convert to fraction form
    356,609.13/535,579.92 = 313,929.69/x
  3. Step 3: Cross multiply
    356,609.13x = 535,579.92 × 313,929.69
  4. Step 4: Simplify right side
    356,609.13x = 168,134,438,255.83
  5. Step 5: Solve for x
    x = 168,134,438,255.83/356,609.13
  6. Step 6: Final answer
    x = 471,481.03

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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.