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Finding the Fourth Proportional to 356,610.13, 535,581.42 and 313,930.69

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Solution

The fourth proportional to 356,610.13, 535,581.42 and 313,930.69 is: 471,482.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,610.13 : 535,581.42 = 313,930.69 : x
  2. Step 2: Convert to fraction form
    356,610.13/535,581.42 = 313,930.69/x
  3. Step 3: Cross multiply
    356,610.13x = 535,581.42 × 313,930.69
  4. Step 4: Simplify right side
    356,610.13x = 168,135,444,731.78
  5. Step 5: Solve for x
    x = 168,135,444,731.78/356,610.13
  6. Step 6: Final answer
    x = 471,482.53

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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.