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Finding the Fourth Proportional to 67,390.68, 101,086.02 and 51,838.68

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Solution

The fourth proportional to 67,390.68, 101,086.02 and 51,838.68 is: 77,758.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,390.68 : 101,086.02 = 51,838.68 : x
  2. Step 2: Convert to fraction form
    67,390.68/101,086.02 = 51,838.68/x
  3. Step 3: Cross multiply
    67,390.68x = 101,086.02 × 51,838.68
  4. Step 4: Simplify right side
    67,390.68x = 5,240,165,078.63
  5. Step 5: Solve for x
    x = 5,240,165,078.63/67,390.68
  6. Step 6: Final answer
    x = 77,758.01

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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.