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Finding the Fourth Proportional to 13,702.16, 18,908.96 and 7,414.56

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Solution

The fourth proportional to 13,702.16, 18,908.96 and 7,414.56 is: 10,232.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,702.16 : 18,908.96 = 7,414.56 : x
  2. Step 2: Convert to fraction form
    13,702.16/18,908.96 = 7,414.56/x
  3. Step 3: Cross multiply
    13,702.16x = 18,908.96 × 7,414.56
  4. Step 4: Simplify right side
    13,702.16x = 140,201,618.46
  5. Step 5: Solve for x
    x = 140,201,618.46/13,702.16
  6. Step 6: Final answer
    x = 10,232.08

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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.