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Finding the Fourth Proportional to 677,466.60, 934,836.56 and 391,078.96

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Solution

The fourth proportional to 677,466.60, 934,836.56 and 391,078.96 is: 539,650.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,466.60 : 934,836.56 = 391,078.96 : x
  2. Step 2: Convert to fraction form
    677,466.60/934,836.56 = 391,078.96/x
  3. Step 3: Cross multiply
    677,466.60x = 934,836.56 × 391,078.96
  4. Step 4: Simplify right side
    677,466.60x = 365,594,909,654.78
  5. Step 5: Solve for x
    x = 365,594,909,654.78/677,466.60
  6. Step 6: Final answer
    x = 539,650.09

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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.