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Finding the Fourth Proportional to 101,647.94, 140,342.62 and 63,465.62

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Solution

The fourth proportional to 101,647.94, 140,342.62 and 63,465.62 is: 87,625.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,647.94 : 140,342.62 = 63,465.62 : x
  2. Step 2: Convert to fraction form
    101,647.94/140,342.62 = 63,465.62/x
  3. Step 3: Cross multiply
    101,647.94x = 140,342.62 × 63,465.62
  4. Step 4: Simplify right side
    101,647.94x = 8,906,931,390.72
  5. Step 5: Solve for x
    x = 8,906,931,390.72/101,647.94
  6. Step 6: Final answer
    x = 87,625.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.