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Finding the Fourth Proportional to 13,704.16, 20,416.04 and 13,043.68

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Solution

The fourth proportional to 13,704.16, 20,416.04 and 13,043.68 is: 19,432.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,704.16 : 20,416.04 = 13,043.68 : x
  2. Step 2: Convert to fraction form
    13,704.16/20,416.04 = 13,043.68/x
  3. Step 3: Cross multiply
    13,704.16x = 20,416.04 × 13,043.68
  4. Step 4: Simplify right side
    13,704.16x = 266,300,292.63
  5. Step 5: Solve for x
    x = 266,300,292.63/13,704.16
  6. Step 6: Final answer
    x = 19,432.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.