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Finding the Fourth Proportional to 52,239, 78,358.33 and 18,959.02

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Solution

The fourth proportional to 52,239, 78,358.33 and 18,959.02 is: 28,438.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,239 : 78,358.33 = 18,959.02 : x
  2. Step 2: Convert to fraction form
    52,239/78,358.33 = 18,959.02/x
  3. Step 3: Cross multiply
    52,239x = 78,358.33 × 18,959.02
  4. Step 4: Simplify right side
    52,239x = 1,485,597,145.64
  5. Step 5: Solve for x
    x = 1,485,597,145.64/52,239
  6. Step 6: Final answer
    x = 28,438.47

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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.