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Finding the Fourth Proportional to 19,953.96, 27,510.88 and 16,355.68

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Solution

The fourth proportional to 19,953.96, 27,510.88 and 16,355.68 is: 22,549.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,953.96 : 27,510.88 = 16,355.68 : x
  2. Step 2: Convert to fraction form
    19,953.96/27,510.88 = 16,355.68/x
  3. Step 3: Cross multiply
    19,953.96x = 27,510.88 × 16,355.68
  4. Step 4: Simplify right side
    19,953.96x = 449,959,149.80
  5. Step 5: Solve for x
    x = 449,959,149.80/19,953.96
  6. Step 6: Final answer
    x = 22,549.87

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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.