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Finding the Fourth Proportional to 18,701.68, 28,052.70 and 4,850.68

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Solution

The fourth proportional to 18,701.68, 28,052.70 and 4,850.68 is: 7,276.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,701.68 : 28,052.70 = 4,850.68 : x
  2. Step 2: Convert to fraction form
    18,701.68/28,052.70 = 4,850.68/x
  3. Step 3: Cross multiply
    18,701.68x = 28,052.70 × 4,850.68
  4. Step 4: Simplify right side
    18,701.68x = 136,074,670.84
  5. Step 5: Solve for x
    x = 136,074,670.84/18,701.68
  6. Step 6: Final answer
    x = 7,276.07

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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.