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Finding the Fourth Proportional to 18,641.63, 27,962.55 and 6,954.75

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Solution

The fourth proportional to 18,641.63, 27,962.55 and 6,954.75 is: 10,432.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,641.63 : 27,962.55 = 6,954.75 : x
  2. Step 2: Convert to fraction form
    18,641.63/27,962.55 = 6,954.75/x
  3. Step 3: Cross multiply
    18,641.63x = 27,962.55 × 6,954.75
  4. Step 4: Simplify right side
    18,641.63x = 194,472,544.61
  5. Step 5: Solve for x
    x = 194,472,544.61/18,641.63
  6. Step 6: Final answer
    x = 10,432.16

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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.