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Finding the Fourth Proportional to 67,458.51, 101,178.53 and 20,080.92

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Solution

The fourth proportional to 67,458.51, 101,178.53 and 20,080.92 is: 30,118.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,458.51 : 101,178.53 = 20,080.92 : x
  2. Step 2: Convert to fraction form
    67,458.51/101,178.53 = 20,080.92/x
  3. Step 3: Cross multiply
    67,458.51x = 101,178.53 × 20,080.92
  4. Step 4: Simplify right side
    67,458.51x = 2,031,757,460.75
  5. Step 5: Solve for x
    x = 2,031,757,460.75/67,458.51
  6. Step 6: Final answer
    x = 30,118.62

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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.