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Finding the Fourth Proportional to 19,951.76, 27,533.28 and 10,999.28

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Solution

The fourth proportional to 19,951.76, 27,533.28 and 10,999.28 is: 15,178.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,951.76 : 27,533.28 = 10,999.28 : x
  2. Step 2: Convert to fraction form
    19,951.76/27,533.28 = 10,999.28/x
  3. Step 3: Cross multiply
    19,951.76x = 27,533.28 × 10,999.28
  4. Step 4: Simplify right side
    19,951.76x = 302,846,256.04
  5. Step 5: Solve for x
    x = 302,846,256.04/19,951.76
  6. Step 6: Final answer
    x = 15,178.92

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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.