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Finding the Fourth Proportional to 625,701.74, 863,403.77 and 383,994.50

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Solution

The fourth proportional to 625,701.74, 863,403.77 and 383,994.50 is: 529,872.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,701.74 : 863,403.77 = 383,994.50 : x
  2. Step 2: Convert to fraction form
    625,701.74/863,403.77 = 383,994.50/x
  3. Step 3: Cross multiply
    625,701.74x = 863,403.77 × 383,994.50
  4. Step 4: Simplify right side
    625,701.74x = 331,542,295,602.23
  5. Step 5: Solve for x
    x = 331,542,295,602.23/625,701.74
  6. Step 6: Final answer
    x = 529,872.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.