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Finding the Fourth Proportional to 440,704.53, 661,057.01 and 290,909.81

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Solution

The fourth proportional to 440,704.53, 661,057.01 and 290,909.81 is: 436,364.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,704.53 : 661,057.01 = 290,909.81 : x
  2. Step 2: Convert to fraction form
    440,704.53/661,057.01 = 290,909.81/x
  3. Step 3: Cross multiply
    440,704.53x = 661,057.01 × 290,909.81
  4. Step 4: Simplify right side
    440,704.53x = 192,307,967,525.63
  5. Step 5: Solve for x
    x = 192,307,967,525.63/440,704.53
  6. Step 6: Final answer
    x = 436,364.86

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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.