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Finding the Fourth Proportional to 11,055.80, 16,583.70 and 9,759.80

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Solution

The fourth proportional to 11,055.80, 16,583.70 and 9,759.80 is: 14,639.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,055.80 : 16,583.70 = 9,759.80 : x
  2. Step 2: Convert to fraction form
    11,055.80/16,583.70 = 9,759.80/x
  3. Step 3: Cross multiply
    11,055.80x = 16,583.70 × 9,759.80
  4. Step 4: Simplify right side
    11,055.80x = 161,853,595.26
  5. Step 5: Solve for x
    x = 161,853,595.26/11,055.80
  6. Step 6: Final answer
    x = 14,639.70

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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.