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Finding the Fourth Proportional to 11,253.60, 16,884.05 and 5,409.45

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Solution

The fourth proportional to 11,253.60, 16,884.05 and 5,409.45 is: 8,115.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,253.60 : 16,884.05 = 5,409.45 : x
  2. Step 2: Convert to fraction form
    11,253.60/16,884.05 = 5,409.45/x
  3. Step 3: Cross multiply
    11,253.60x = 16,884.05 × 5,409.45
  4. Step 4: Simplify right side
    11,253.60x = 91,333,466.48
  5. Step 5: Solve for x
    x = 91,333,466.48/11,253.60
  6. Step 6: Final answer
    x = 8,115.93

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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.