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Finding the Fourth Proportional to 581,143.69, 801,993.11 and 319,495.79

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Solution

The fourth proportional to 581,143.69, 801,993.11 and 319,495.79 is: 440,912.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    581,143.69 : 801,993.11 = 319,495.79 : x
  2. Step 2: Convert to fraction form
    581,143.69/801,993.11 = 319,495.79/x
  3. Step 3: Cross multiply
    581,143.69x = 801,993.11 × 319,495.79
  4. Step 4: Simplify right side
    581,143.69x = 256,233,416,646.56
  5. Step 5: Solve for x
    x = 256,233,416,646.56/581,143.69
  6. Step 6: Final answer
    x = 440,912.33

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1.5x scale

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.