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Finding the Fourth Proportional to 19,865, 27,414.42 and 10,913.34

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Solution

The fourth proportional to 19,865, 27,414.42 and 10,913.34 is: 15,060.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,865 : 27,414.42 = 10,913.34 : x
  2. Step 2: Convert to fraction form
    19,865/27,414.42 = 10,913.34/x
  3. Step 3: Cross multiply
    19,865x = 27,414.42 × 10,913.34
  4. Step 4: Simplify right side
    19,865x = 299,182,886.36
  5. Step 5: Solve for x
    x = 299,182,886.36/19,865
  6. Step 6: Final answer
    x = 15,060.80

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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.