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Finding the Fourth Proportional to 18,671.84, 28,017.52 and 12,096.32

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Solution

The fourth proportional to 18,671.84, 28,017.52 and 12,096.32 is: 18,150.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,671.84 : 28,017.52 = 12,096.32 : x
  2. Step 2: Convert to fraction form
    18,671.84/28,017.52 = 12,096.32/x
  3. Step 3: Cross multiply
    18,671.84x = 28,017.52 × 12,096.32
  4. Step 4: Simplify right side
    18,671.84x = 338,908,887.53
  5. Step 5: Solve for x
    x = 338,908,887.53/18,671.84
  6. Step 6: Final answer
    x = 18,150.80

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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.