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Finding the Fourth Proportional to 336,812.65, 505,226.13 and 120,685.45

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Solution

The fourth proportional to 336,812.65, 505,226.13 and 120,685.45 is: 181,030.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    336,812.65 : 505,226.13 = 120,685.45 : x
  2. Step 2: Convert to fraction form
    336,812.65/505,226.13 = 120,685.45/x
  3. Step 3: Cross multiply
    336,812.65x = 505,226.13 × 120,685.45
  4. Step 4: Simplify right side
    336,812.65x = 60,973,442,850.81
  5. Step 5: Solve for x
    x = 60,973,442,850.81/336,812.65
  6. Step 6: Final answer
    x = 181,030.74

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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.