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Finding the Fourth Proportional to 20,053.92, 27,673.95 and 10,979.28

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Solution

The fourth proportional to 20,053.92, 27,673.95 and 10,979.28 is: 15,151.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,053.92 : 27,673.95 = 10,979.28 : x
  2. Step 2: Convert to fraction form
    20,053.92/27,673.95 = 10,979.28/x
  3. Step 3: Cross multiply
    20,053.92x = 27,673.95 × 10,979.28
  4. Step 4: Simplify right side
    20,053.92x = 303,840,045.76
  5. Step 5: Solve for x
    x = 303,840,045.76/20,053.92
  6. Step 6: Final answer
    x = 15,151.15

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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.