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Finding the Fourth Proportional to 662,973.90, 993,877.65 and 396,840.30

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Solution

The fourth proportional to 662,973.90, 993,877.65 and 396,840.30 is: 594,911.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,973.90 : 993,877.65 = 396,840.30 : x
  2. Step 2: Convert to fraction form
    662,973.90/993,877.65 = 396,840.30/x
  3. Step 3: Cross multiply
    662,973.90x = 993,877.65 × 396,840.30
  4. Step 4: Simplify right side
    662,973.90x = 394,410,704,789.30
  5. Step 5: Solve for x
    x = 394,410,704,789.30/662,973.90
  6. Step 6: Final answer
    x = 594,911.36

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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.