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Finding the Fourth Proportional to 605,117.80, 907,676.70 and 393,610.60

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Solution

The fourth proportional to 605,117.80, 907,676.70 and 393,610.60 is: 590,415.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,117.80 : 907,676.70 = 393,610.60 : x
  2. Step 2: Convert to fraction form
    605,117.80/907,676.70 = 393,610.60/x
  3. Step 3: Cross multiply
    605,117.80x = 907,676.70 × 393,610.60
  4. Step 4: Simplify right side
    605,117.80x = 357,271,170,493.02
  5. Step 5: Solve for x
    x = 357,271,170,493.02/605,117.80
  6. Step 6: Final answer
    x = 590,415.90

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Similar ratio
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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.