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Finding the Fourth Proportional to 14,918.60, 20,588.74 and 9,874.02

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Solution

The fourth proportional to 14,918.60, 20,588.74 and 9,874.02 is: 13,626.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,918.60 : 20,588.74 = 9,874.02 : x
  2. Step 2: Convert to fraction form
    14,918.60/20,588.74 = 9,874.02/x
  3. Step 3: Cross multiply
    14,918.60x = 20,588.74 × 9,874.02
  4. Step 4: Simplify right side
    14,918.60x = 203,293,630.53
  5. Step 5: Solve for x
    x = 203,293,630.53/14,918.60
  6. Step 6: Final answer
    x = 13,626.86

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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.