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Finding the Fourth Proportional to 515,503.41, 773,820.79 and 409,568.32

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Solution

The fourth proportional to 515,503.41, 773,820.79 and 409,568.32 is: 614,801.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,503.41 : 773,820.79 = 409,568.32 : x
  2. Step 2: Convert to fraction form
    515,503.41/773,820.79 = 409,568.32/x
  3. Step 3: Cross multiply
    515,503.41x = 773,820.79 × 409,568.32
  4. Step 4: Simplify right side
    515,503.41x = 316,932,485,364.92
  5. Step 5: Solve for x
    x = 316,932,485,364.92/515,503.41
  6. Step 6: Final answer
    x = 614,801.91

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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.