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Finding the Fourth Proportional to 403,581.15, 605,451.51 and 119,276.82

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Solution

The fourth proportional to 403,581.15, 605,451.51 and 119,276.82 is: 178,938.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,581.15 : 605,451.51 = 119,276.82 : x
  2. Step 2: Convert to fraction form
    403,581.15/605,451.51 = 119,276.82/x
  3. Step 3: Cross multiply
    403,581.15x = 605,451.51 × 119,276.82
  4. Step 4: Simplify right side
    403,581.15x = 72,216,330,777.00
  5. Step 5: Solve for x
    x = 72,216,330,777.00/403,581.15
  6. Step 6: Final answer
    x = 178,938.81

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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.