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Finding the Fourth Proportional to 19,963.16, 27,520.53 and 15,706.88

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Solution

The fourth proportional to 19,963.16, 27,520.53 and 15,706.88 is: 21,652.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,963.16 : 27,520.53 = 15,706.88 : x
  2. Step 2: Convert to fraction form
    19,963.16/27,520.53 = 15,706.88/x
  3. Step 3: Cross multiply
    19,963.16x = 27,520.53 × 15,706.88
  4. Step 4: Simplify right side
    19,963.16x = 432,261,568.94
  5. Step 5: Solve for x
    x = 432,261,568.94/19,963.16
  6. Step 6: Final answer
    x = 21,652.96

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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.