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Finding the Fourth Proportional to 49,863.68, 74,786.88 and 12,927.68

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Solution

The fourth proportional to 49,863.68, 74,786.88 and 12,927.68 is: 19,389.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,863.68 : 74,786.88 = 12,927.68 : x
  2. Step 2: Convert to fraction form
    49,863.68/74,786.88 = 12,927.68/x
  3. Step 3: Cross multiply
    49,863.68x = 74,786.88 × 12,927.68
  4. Step 4: Simplify right side
    49,863.68x = 966,820,852.84
  5. Step 5: Solve for x
    x = 966,820,852.84/49,863.68
  6. Step 6: Final answer
    x = 19,389.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.