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Finding the Fourth Proportional to 519,520.88, 779,106.36 and 419,443.76

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Solution

The fourth proportional to 519,520.88, 779,106.36 and 419,443.76 is: 629,024.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,520.88 : 779,106.36 = 419,443.76 : x
  2. Step 2: Convert to fraction form
    519,520.88/779,106.36 = 419,443.76/x
  3. Step 3: Cross multiply
    519,520.88x = 779,106.36 × 419,443.76
  4. Step 4: Simplify right side
    519,520.88x = 326,791,301,078.31
  5. Step 5: Solve for x
    x = 326,791,301,078.31/519,520.88
  6. Step 6: Final answer
    x = 629,024.38

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1.5x scale

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.