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Finding the Fourth Proportional to 11,308.60, 15,589.48 and 7,941.16

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Solution

The fourth proportional to 11,308.60, 15,589.48 and 7,941.16 is: 10,947.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,308.60 : 15,589.48 = 7,941.16 : x
  2. Step 2: Convert to fraction form
    11,308.60/15,589.48 = 7,941.16/x
  3. Step 3: Cross multiply
    11,308.60x = 15,589.48 × 7,941.16
  4. Step 4: Simplify right side
    11,308.60x = 123,798,555.00
  5. Step 5: Solve for x
    x = 123,798,555.00/11,308.60
  6. Step 6: Final answer
    x = 10,947.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.