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Finding the Fourth Proportional to 519,405.65, 779,355.23 and 359,727.33

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Solution

The fourth proportional to 519,405.65, 779,355.23 and 359,727.33 is: 539,761.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,405.65 : 779,355.23 = 359,727.33 : x
  2. Step 2: Convert to fraction form
    519,405.65/779,355.23 = 359,727.33/x
  3. Step 3: Cross multiply
    519,405.65x = 779,355.23 × 359,727.33
  4. Step 4: Simplify right side
    519,405.65x = 280,355,374,210.80
  5. Step 5: Solve for x
    x = 280,355,374,210.80/519,405.65
  6. Step 6: Final answer
    x = 539,761.89

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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.