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Finding the Fourth Proportional to 509,640.60, 764,460.90 and 154,637.40

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Solution

The fourth proportional to 509,640.60, 764,460.90 and 154,637.40 is: 231,956.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,640.60 : 764,460.90 = 154,637.40 : x
  2. Step 2: Convert to fraction form
    509,640.60/764,460.90 = 154,637.40/x
  3. Step 3: Cross multiply
    509,640.60x = 764,460.90 × 154,637.40
  4. Step 4: Simplify right side
    509,640.60x = 118,214,245,977.66
  5. Step 5: Solve for x
    x = 118,214,245,977.66/509,640.60
  6. Step 6: Final answer
    x = 231,956.10

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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.