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Finding the Fourth Proportional to 61,625.68, 92,438.52 and 20,072.68

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Solution

The fourth proportional to 61,625.68, 92,438.52 and 20,072.68 is: 30,109.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,625.68 : 92,438.52 = 20,072.68 : x
  2. Step 2: Convert to fraction form
    61,625.68/92,438.52 = 20,072.68/x
  3. Step 3: Cross multiply
    61,625.68x = 92,438.52 × 20,072.68
  4. Step 4: Simplify right side
    61,625.68x = 1,855,488,831.63
  5. Step 5: Solve for x
    x = 1,855,488,831.63/61,625.68
  6. Step 6: Final answer
    x = 30,109.02

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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.