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Finding the Fourth Proportional to 92,615.41, 139,109.28 and 55,248.49

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Solution

The fourth proportional to 92,615.41, 139,109.28 and 55,248.49 is: 82,983.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,615.41 : 139,109.28 = 55,248.49 : x
  2. Step 2: Convert to fraction form
    92,615.41/139,109.28 = 55,248.49/x
  3. Step 3: Cross multiply
    92,615.41x = 139,109.28 × 55,248.49
  4. Step 4: Simplify right side
    92,615.41x = 7,685,577,664.99
  5. Step 5: Solve for x
    x = 7,685,577,664.99/92,615.41
  6. Step 6: Final answer
    x = 82,983.79

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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.