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Finding the Fourth Proportional to 515,858.10, 773,787.15 and 326,901.30

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Solution

The fourth proportional to 515,858.10, 773,787.15 and 326,901.30 is: 490,351.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,858.10 : 773,787.15 = 326,901.30 : x
  2. Step 2: Convert to fraction form
    515,858.10/773,787.15 = 326,901.30/x
  3. Step 3: Cross multiply
    515,858.10x = 773,787.15 × 326,901.30
  4. Step 4: Simplify right side
    515,858.10x = 252,952,025,258.30
  5. Step 5: Solve for x
    x = 252,952,025,258.30/515,858.10
  6. Step 6: Final answer
    x = 490,351.95

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Half scale
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Double scale
Find fourth proportional to 515,859.10, 773,788.65 and 326,902.30
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.