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Finding the Fourth Proportional to 515,847.96, 774,332.46 and 436,256.55

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Solution

The fourth proportional to 515,847.96, 774,332.46 and 436,256.55 is: 654,858.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,847.96 : 774,332.46 = 436,256.55 : x
  2. Step 2: Convert to fraction form
    515,847.96/774,332.46 = 436,256.55/x
  3. Step 3: Cross multiply
    515,847.96x = 774,332.46 × 436,256.55
  4. Step 4: Simplify right side
    515,847.96x = 337,807,607,552.61
  5. Step 5: Solve for x
    x = 337,807,607,552.61/515,847.96
  6. Step 6: Final answer
    x = 654,858.86

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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.