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Finding the Fourth Proportional to 509,403.60, 764,105.40 and 154,400.04

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Solution

The fourth proportional to 509,403.60, 764,105.40 and 154,400.04 is: 231,600.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,403.60 : 764,105.40 = 154,400.04 : x
  2. Step 2: Convert to fraction form
    509,403.60/764,105.40 = 154,400.04/x
  3. Step 3: Cross multiply
    509,403.60x = 764,105.40 × 154,400.04
  4. Step 4: Simplify right side
    509,403.60x = 117,977,904,324.22
  5. Step 5: Solve for x
    x = 117,977,904,324.22/509,403.60
  6. Step 6: Final answer
    x = 231,600.06

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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.