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Finding the Fourth Proportional to 92,885.94, 139,270.59 and 61,261.92

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Solution

The fourth proportional to 92,885.94, 139,270.59 and 61,261.92 is: 91,854.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,885.94 : 139,270.59 = 61,261.92 : x
  2. Step 2: Convert to fraction form
    92,885.94/139,270.59 = 61,261.92/x
  3. Step 3: Cross multiply
    92,885.94x = 139,270.59 × 61,261.92
  4. Step 4: Simplify right side
    92,885.94x = 8,531,983,742.93
  5. Step 5: Solve for x
    x = 8,531,983,742.93/92,885.94
  6. Step 6: Final answer
    x = 91,854.42

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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.