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Finding the Fourth Proportional to 354,349.50, 531,526.17 and 91,693.50

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Solution

The fourth proportional to 354,349.50, 531,526.17 and 91,693.50 is: 137,540.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,349.50 : 531,526.17 = 91,693.50 : x
  2. Step 2: Convert to fraction form
    354,349.50/531,526.17 = 91,693.50/x
  3. Step 3: Cross multiply
    354,349.50x = 531,526.17 × 91,693.50
  4. Step 4: Simplify right side
    354,349.50x = 48,737,494,868.90
  5. Step 5: Solve for x
    x = 48,737,494,868.90/354,349.50
  6. Step 6: Final answer
    x = 137,540.75

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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.