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Finding the Fourth Proportional to 11,003.70, 16,505.55 and 9,707.70

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Solution

The fourth proportional to 11,003.70, 16,505.55 and 9,707.70 is: 14,561.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,003.70 : 16,505.55 = 9,707.70 : x
  2. Step 2: Convert to fraction form
    11,003.70/16,505.55 = 9,707.70/x
  3. Step 3: Cross multiply
    11,003.70x = 16,505.55 × 9,707.70
  4. Step 4: Simplify right side
    11,003.70x = 160,230,927.74
  5. Step 5: Solve for x
    x = 160,230,927.74/11,003.70
  6. Step 6: Final answer
    x = 14,561.55

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Similar ratio
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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.