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Finding the Fourth Proportional to 28,063.84, 38,734.74 and 16,134.11

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Solution

The fourth proportional to 28,063.84, 38,734.74 and 16,134.11 is: 22,268.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,063.84 : 38,734.74 = 16,134.11 : x
  2. Step 2: Convert to fraction form
    28,063.84/38,734.74 = 16,134.11/x
  3. Step 3: Cross multiply
    28,063.84x = 38,734.74 × 16,134.11
  4. Step 4: Simplify right side
    28,063.84x = 624,950,422.81
  5. Step 5: Solve for x
    x = 624,950,422.81/28,063.84
  6. Step 6: Final answer
    x = 22,268.89

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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.