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Finding the Fourth Proportional to 14,871.58, 20,522.64 and 8,157.07

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Solution

The fourth proportional to 14,871.58, 20,522.64 and 8,157.07 is: 11,256.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,871.58 : 20,522.64 = 8,157.07 : x
  2. Step 2: Convert to fraction form
    14,871.58/20,522.64 = 8,157.07/x
  3. Step 3: Cross multiply
    14,871.58x = 20,522.64 × 8,157.07
  4. Step 4: Simplify right side
    14,871.58x = 167,404,611.06
  5. Step 5: Solve for x
    x = 167,404,611.06/14,871.58
  6. Step 6: Final answer
    x = 11,256.68

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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.