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Finding the Fourth Proportional to 13,170.54, 19,639.64 and 13,052.01

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Solution

The fourth proportional to 13,170.54, 19,639.64 and 13,052.01 is: 19,462.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,170.54 : 19,639.64 = 13,052.01 : x
  2. Step 2: Convert to fraction form
    13,170.54/19,639.64 = 13,052.01/x
  3. Step 3: Cross multiply
    13,170.54x = 19,639.64 × 13,052.01
  4. Step 4: Simplify right side
    13,170.54x = 256,336,712.42
  5. Step 5: Solve for x
    x = 256,336,712.42/13,170.54
  6. Step 6: Final answer
    x = 19,462.89

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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.