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Finding the Fourth Proportional to 349,380.88, 523,942.39 and 124,681.21

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Solution

The fourth proportional to 349,380.88, 523,942.39 and 124,681.21 is: 186,975.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,380.88 : 523,942.39 = 124,681.21 : x
  2. Step 2: Convert to fraction form
    349,380.88/523,942.39 = 124,681.21/x
  3. Step 3: Cross multiply
    349,380.88x = 523,942.39 × 124,681.21
  4. Step 4: Simplify right side
    349,380.88x = 65,325,771,155.49
  5. Step 5: Solve for x
    x = 65,325,771,155.49/349,380.88
  6. Step 6: Final answer
    x = 186,975.80

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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.