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Finding the Fourth Proportional to 13,687.76, 20,527.58 and 5,894.76

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Solution

The fourth proportional to 13,687.76, 20,527.58 and 5,894.76 is: 8,840.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,687.76 : 20,527.58 = 5,894.76 : x
  2. Step 2: Convert to fraction form
    13,687.76/20,527.58 = 5,894.76/x
  3. Step 3: Cross multiply
    13,687.76x = 20,527.58 × 5,894.76
  4. Step 4: Simplify right side
    13,687.76x = 121,005,157.48
  5. Step 5: Solve for x
    x = 121,005,157.48/13,687.76
  6. Step 6: Final answer
    x = 8,840.39

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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.