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Finding the Fourth Proportional to 94,393, 141,589.50 and 38,990.44

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Solution

The fourth proportional to 94,393, 141,589.50 and 38,990.44 is: 58,485.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,393 : 141,589.50 = 38,990.44 : x
  2. Step 2: Convert to fraction form
    94,393/141,589.50 = 38,990.44/x
  3. Step 3: Cross multiply
    94,393x = 141,589.50 × 38,990.44
  4. Step 4: Simplify right side
    94,393x = 5,520,636,904.38
  5. Step 5: Solve for x
    x = 5,520,636,904.38/94,393
  6. Step 6: Final answer
    x = 58,485.66

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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.