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Finding the Fourth Proportional to 11,362.40, 17,043.60 and 10,109.60

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Solution

The fourth proportional to 11,362.40, 17,043.60 and 10,109.60 is: 15,164.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,362.40 : 17,043.60 = 10,109.60 : x
  2. Step 2: Convert to fraction form
    11,362.40/17,043.60 = 10,109.60/x
  3. Step 3: Cross multiply
    11,362.40x = 17,043.60 × 10,109.60
  4. Step 4: Simplify right side
    11,362.40x = 172,303,978.56
  5. Step 5: Solve for x
    x = 172,303,978.56/11,362.40
  6. Step 6: Final answer
    x = 15,164.40

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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.