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Finding the Fourth Proportional to 460,079.84, 690,128.94 and 123,119.96

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Solution

The fourth proportional to 460,079.84, 690,128.94 and 123,119.96 is: 184,682.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    460,079.84 : 690,128.94 = 123,119.96 : x
  2. Step 2: Convert to fraction form
    460,079.84/690,128.94 = 123,119.96/x
  3. Step 3: Cross multiply
    460,079.84x = 690,128.94 × 123,119.96
  4. Step 4: Simplify right side
    460,079.84x = 84,968,647,487.64
  5. Step 5: Solve for x
    x = 84,968,647,487.64/460,079.84
  6. Step 6: Final answer
    x = 184,682.40

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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.