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Finding the Fourth Proportional to 619,560.40, 929,340.60 and 336,125.20

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Solution

The fourth proportional to 619,560.40, 929,340.60 and 336,125.20 is: 504,187.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,560.40 : 929,340.60 = 336,125.20 : x
  2. Step 2: Convert to fraction form
    619,560.40/929,340.60 = 336,125.20/x
  3. Step 3: Cross multiply
    619,560.40x = 929,340.60 × 336,125.20
  4. Step 4: Simplify right side
    619,560.40x = 312,374,795,043.12
  5. Step 5: Solve for x
    x = 312,374,795,043.12/619,560.40
  6. Step 6: Final answer
    x = 504,187.80

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Double scale
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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.