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Finding the Fourth Proportional to 91,103.82, 136,655.74 and 48,925.88

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Solution

The fourth proportional to 91,103.82, 136,655.74 and 48,925.88 is: 73,388.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,103.82 : 136,655.74 = 48,925.88 : x
  2. Step 2: Convert to fraction form
    91,103.82/136,655.74 = 48,925.88/x
  3. Step 3: Cross multiply
    91,103.82x = 136,655.74 × 48,925.88
  4. Step 4: Simplify right side
    91,103.82x = 6,686,002,336.55
  5. Step 5: Solve for x
    x = 6,686,002,336.55/91,103.82
  6. Step 6: Final answer
    x = 73,388.83

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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.