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Finding the Fourth Proportional to 19,959.52, 27,543.50 and 11,007.40

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Solution

The fourth proportional to 19,959.52, 27,543.50 and 11,007.40 is: 15,189.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,959.52 : 27,543.50 = 11,007.40 : x
  2. Step 2: Convert to fraction form
    19,959.52/27,543.50 = 11,007.40/x
  3. Step 3: Cross multiply
    19,959.52x = 27,543.50 × 11,007.40
  4. Step 4: Simplify right side
    19,959.52x = 303,182,321.90
  5. Step 5: Solve for x
    x = 303,182,321.90/19,959.52
  6. Step 6: Final answer
    x = 15,189.86

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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.