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Finding the Fourth Proportional to 67,656.69, 101,412.14 and 28,188.63

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Solution

The fourth proportional to 67,656.69, 101,412.14 and 28,188.63 is: 42,252.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,656.69 : 101,412.14 = 28,188.63 : x
  2. Step 2: Convert to fraction form
    67,656.69/101,412.14 = 28,188.63/x
  3. Step 3: Cross multiply
    67,656.69x = 101,412.14 × 28,188.63
  4. Step 4: Simplify right side
    67,656.69x = 2,858,669,151.03
  5. Step 5: Solve for x
    x = 2,858,669,151.03/67,656.69
  6. Step 6: Final answer
    x = 42,252.57

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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.