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Finding the Fourth Proportional to 52,959.65, 79,439.42 and 13,516.77

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Solution

The fourth proportional to 52,959.65, 79,439.42 and 13,516.77 is: 20,275.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,959.65 : 79,439.42 = 13,516.77 : x
  2. Step 2: Convert to fraction form
    52,959.65/79,439.42 = 13,516.77/x
  3. Step 3: Cross multiply
    52,959.65x = 79,439.42 × 13,516.77
  4. Step 4: Simplify right side
    52,959.65x = 1,073,764,301.49
  5. Step 5: Solve for x
    x = 1,073,764,301.49/52,959.65
  6. Step 6: Final answer
    x = 20,275.14

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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.