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Finding the Fourth Proportional to 19,915.82, 27,483.65 and 10,963.10

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Solution

The fourth proportional to 19,915.82, 27,483.65 and 10,963.10 is: 15,128.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,915.82 : 27,483.65 = 10,963.10 : x
  2. Step 2: Convert to fraction form
    19,915.82/27,483.65 = 10,963.10/x
  3. Step 3: Cross multiply
    19,915.82x = 27,483.65 × 10,963.10
  4. Step 4: Simplify right side
    19,915.82x = 301,305,811.08
  5. Step 5: Solve for x
    x = 301,305,811.08/19,915.82
  6. Step 6: Final answer
    x = 15,128.97

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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.