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Finding the Fourth Proportional to 605,425.50, 835,567.38 and 391,188.60

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Solution

The fourth proportional to 605,425.50, 835,567.38 and 391,188.60 is: 539,892.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,425.50 : 835,567.38 = 391,188.60 : x
  2. Step 2: Convert to fraction form
    605,425.50/835,567.38 = 391,188.60/x
  3. Step 3: Cross multiply
    605,425.50x = 835,567.38 × 391,188.60
  4. Step 4: Simplify right side
    605,425.50x = 326,864,433,587.87
  5. Step 5: Solve for x
    x = 326,864,433,587.87/605,425.50
  6. Step 6: Final answer
    x = 539,892.08

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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.