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Finding the Fourth Proportional to 19,953.76, 27,336.77 and 19,206.40

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Solution

The fourth proportional to 19,953.76, 27,336.77 and 19,206.40 is: 26,312.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,953.76 : 27,336.77 = 19,206.40 : x
  2. Step 2: Convert to fraction form
    19,953.76/27,336.77 = 19,206.40/x
  3. Step 3: Cross multiply
    19,953.76x = 27,336.77 × 19,206.40
  4. Step 4: Simplify right side
    19,953.76x = 525,040,939.33
  5. Step 5: Solve for x
    x = 525,040,939.33/19,953.76
  6. Step 6: Final answer
    x = 26,312.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.