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Finding the Fourth Proportional to 13,756.42, 20,646.42 and 13,652.88

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Solution

The fourth proportional to 13,756.42, 20,646.42 and 13,652.88 is: 20,491.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,756.42 : 20,646.42 = 13,652.88 : x
  2. Step 2: Convert to fraction form
    13,756.42/20,646.42 = 13,652.88/x
  3. Step 3: Cross multiply
    13,756.42x = 20,646.42 × 13,652.88
  4. Step 4: Simplify right side
    13,756.42x = 281,883,094.69
  5. Step 5: Solve for x
    x = 281,883,094.69/13,756.42
  6. Step 6: Final answer
    x = 20,491.02

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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.