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Finding the Fourth Proportional to 9,817.18, 14,729.55 and 4,890.49

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Solution

The fourth proportional to 9,817.18, 14,729.55 and 4,890.49 is: 7,337.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,817.18 : 14,729.55 = 4,890.49 : x
  2. Step 2: Convert to fraction form
    9,817.18/14,729.55 = 4,890.49/x
  3. Step 3: Cross multiply
    9,817.18x = 14,729.55 × 4,890.49
  4. Step 4: Simplify right side
    9,817.18x = 72,034,716.98
  5. Step 5: Solve for x
    x = 72,034,716.98/9,817.18
  6. Step 6: Final answer
    x = 7,337.62

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1.5x scale

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.