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Finding the Fourth Proportional to 509,993.43, 764,985.54 and 190,134.42

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Solution

The fourth proportional to 509,993.43, 764,985.54 and 190,134.42 is: 285,199.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,993.43 : 764,985.54 = 190,134.42 : x
  2. Step 2: Convert to fraction form
    509,993.43/764,985.54 = 190,134.42/x
  3. Step 3: Cross multiply
    509,993.43x = 764,985.54 × 190,134.42
  4. Step 4: Simplify right side
    509,993.43x = 145,450,081,956.29
  5. Step 5: Solve for x
    x = 145,450,081,956.29/509,993.43
  6. Step 6: Final answer
    x = 285,199.91

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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.