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Finding the Fourth Proportional to 515,720, 773,579.30 and 195,871.25

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Solution

The fourth proportional to 515,720, 773,579.30 and 195,871.25 is: 293,806.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,720 : 773,579.30 = 195,871.25 : x
  2. Step 2: Convert to fraction form
    515,720/773,579.30 = 195,871.25/x
  3. Step 3: Cross multiply
    515,720x = 773,579.30 × 195,871.25
  4. Step 4: Simplify right side
    515,720x = 151,521,944,465.13
  5. Step 5: Solve for x
    x = 151,521,944,465.13/515,720
  6. Step 6: Final answer
    x = 293,806.61

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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.