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Finding the Fourth Proportional to 92,682.58, 139,002.54 and 55,253.20

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Solution

The fourth proportional to 92,682.58, 139,002.54 and 55,253.20 is: 82,867.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,682.58 : 139,002.54 = 55,253.20 : x
  2. Step 2: Convert to fraction form
    92,682.58/139,002.54 = 55,253.20/x
  3. Step 3: Cross multiply
    92,682.58x = 139,002.54 × 55,253.20
  4. Step 4: Simplify right side
    92,682.58x = 7,680,335,143.13
  5. Step 5: Solve for x
    x = 7,680,335,143.13/92,682.58
  6. Step 6: Final answer
    x = 82,867.08

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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.