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Finding the Fourth Proportional to 11,403.52, 17,141.76 and 10,591.90

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Solution

The fourth proportional to 11,403.52, 17,141.76 and 10,591.90 is: 15,921.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,403.52 : 17,141.76 = 10,591.90 : x
  2. Step 2: Convert to fraction form
    11,403.52/17,141.76 = 10,591.90/x
  3. Step 3: Cross multiply
    11,403.52x = 17,141.76 × 10,591.90
  4. Step 4: Simplify right side
    11,403.52x = 181,563,807.74
  5. Step 5: Solve for x
    x = 181,563,807.74/11,403.52
  6. Step 6: Final answer
    x = 15,921.73

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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.