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Finding the Fourth Proportional to 509,362.56, 764,043.84 and 193,745.52

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Solution

The fourth proportional to 509,362.56, 764,043.84 and 193,745.52 is: 290,618.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,362.56 : 764,043.84 = 193,745.52 : x
  2. Step 2: Convert to fraction form
    509,362.56/764,043.84 = 193,745.52/x
  3. Step 3: Cross multiply
    509,362.56x = 764,043.84 × 193,745.52
  4. Step 4: Simplify right side
    509,362.56x = 148,030,071,083.60
  5. Step 5: Solve for x
    x = 148,030,071,083.60/509,362.56
  6. Step 6: Final answer
    x = 290,618.28

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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.